North Korea has executed its special envoy to the United States as well as foreign ministry officials who carried out working-level negotiations for the second summit with Donald Trump in February, holding them responsible for its collapse, South Korean reports say.
Friday, May 31, 2019
Trump's "friend" misbehaving, again
Well, can Trump find a way to forgive his "friend" for some more friendship challenging behaviour?
Thursday, May 30, 2019
In which renewable energy saves the world (without that much storage)
If this latest idea is right, it suggests that renewables are more capable of saving the world than I had realised.
An article at The Conversation argues that their modelling indicates that, rather than worry about building a lot of storage for renewables, just build with a big enough over-capacity instead, and don't use the excess when it's produced. Sounds questionable, but then again, who knew that adding a metre to an equator-covering rope would raise it 13 cm around the whole world? Not me, so I'm not relying on intuition ever again, or at least, until it suits me.
I would have thought the overcapacity would have to be spread out a fair bit, but they don't even seem to be arguing that. For example:
Anyway, let's go back to some of my earlier ideas about how to get along with more solar. Because if you are going to build to overcapacity, you are going to be wanting to install a lot of extra solar compared to what we have now, and in some places, do you really want to cover up good land with panels? So:
* Remember my previous posts about floating solar on water? Specifically, there seems to be no good reason not to cover large parts of water storage dams (such as Brisbane's Wivenhoe and Somerset dams) with solar panels on plastic floats. I doubt that they represent any real pollution risk to drinking water, and plastic floats are surely pretty cheap. Less evaporation from the dams too.
Why is no one in Australia listening to what is a patently good idea??
Remember - I also argued for Snowy 2 to use floating solar panels to pump storage water. (Although maybe wind there is a better bet?)
* I also have posted before about compulsory State government building codes requiring a minimum amount of solar power and storage - why wouldn't that be a good idea in most of Australia?
In fact, I see that the Greens have adopted such a policy.
And it has now been adopted in California.
This could only help with the "build to overcapacity" idea too, surely?
* If you have to build large solar farms in the country side, I've also posted before (in 2015) about raising them above the ground and spreading them out enough to still be able to use the land underneath for farming or grazing.
* Not sure that I have ever posted about it before, but if you are going to spread out large solar power farms (say, in the middle of Australia where the land is not productive), then you need a good electricity network that is going to reduce losses over transmission distance. High Voltage Direct Current cables have long been mooted as good for that, but their advance seems to be happening pretty slowly.
Gosh, look at the photo at that link for some real oversized gear. I'll throw it in here because it reminds me of the ridiculous oversized equipment on Forbidden Planet:
And in conclusion:
With this latest idea, combined with what I've been suggesting over the last few years, it seems I've pretty much solved the world's renewable energy problems, if only people would listen to me!
Thank you.
PS: I see that a Bill Gates clip from last year of him making a cranky sounding statement that people were kidding themselves if renewables and storage could power the world is doing the rounds. I suspect he just has settled on nuclear as being essential and won't be budged. And didn't he mention steel making?
Well, why doesn't he look harder into proposals to make steel either with no coal at all (see Sweden), or even the CSIRO's proposal to make it with biochar as a way to cut down the CO2 by a large amount.
I can envisage some places where renewables are difficult to use on large enough scale (that Russian city in the Arctic circle during winter, for one!). But just because Bill Gates has what sounds like a sensible hunch, it doesn't always pan out. Has his "condom of the future" competition had any dramatic effects, for example? Not that I know of...
An article at The Conversation argues that their modelling indicates that, rather than worry about building a lot of storage for renewables, just build with a big enough over-capacity instead, and don't use the excess when it's produced. Sounds questionable, but then again, who knew that adding a metre to an equator-covering rope would raise it 13 cm around the whole world? Not me, so I'm not relying on intuition ever again, or at least, until it suits me.
I would have thought the overcapacity would have to be spread out a fair bit, but they don't even seem to be arguing that. For example:
A legitimate question to ask is what would be the area required for a full deployment of oversized solar PV. For Minnesota, in the most extreme 100% PV generation scenario assuming oversizing by a factor of two – or doubling the solar needed to meet current demand – this area would amount to 435 square miles, assuming solar panels with state-of-the-art efficiency of 20%. This area represents less than 1% of the state’s cultivated crops and half of the high- and medium-density urbanized space.Again - sounds a touch too good to be true, but, you know, that rope thing is starting to make me believe anything.
Anyway, let's go back to some of my earlier ideas about how to get along with more solar. Because if you are going to build to overcapacity, you are going to be wanting to install a lot of extra solar compared to what we have now, and in some places, do you really want to cover up good land with panels? So:
* Remember my previous posts about floating solar on water? Specifically, there seems to be no good reason not to cover large parts of water storage dams (such as Brisbane's Wivenhoe and Somerset dams) with solar panels on plastic floats. I doubt that they represent any real pollution risk to drinking water, and plastic floats are surely pretty cheap. Less evaporation from the dams too.
Why is no one in Australia listening to what is a patently good idea??
Remember - I also argued for Snowy 2 to use floating solar panels to pump storage water. (Although maybe wind there is a better bet?)
* I also have posted before about compulsory State government building codes requiring a minimum amount of solar power and storage - why wouldn't that be a good idea in most of Australia?
In fact, I see that the Greens have adopted such a policy.
And it has now been adopted in California.
This could only help with the "build to overcapacity" idea too, surely?
* If you have to build large solar farms in the country side, I've also posted before (in 2015) about raising them above the ground and spreading them out enough to still be able to use the land underneath for farming or grazing.
* Not sure that I have ever posted about it before, but if you are going to spread out large solar power farms (say, in the middle of Australia where the land is not productive), then you need a good electricity network that is going to reduce losses over transmission distance. High Voltage Direct Current cables have long been mooted as good for that, but their advance seems to be happening pretty slowly.
Gosh, look at the photo at that link for some real oversized gear. I'll throw it in here because it reminds me of the ridiculous oversized equipment on Forbidden Planet:
And in conclusion:
With this latest idea, combined with what I've been suggesting over the last few years, it seems I've pretty much solved the world's renewable energy problems, if only people would listen to me!
Thank you.
PS: I see that a Bill Gates clip from last year of him making a cranky sounding statement that people were kidding themselves if renewables and storage could power the world is doing the rounds. I suspect he just has settled on nuclear as being essential and won't be budged. And didn't he mention steel making?
Well, why doesn't he look harder into proposals to make steel either with no coal at all (see Sweden), or even the CSIRO's proposal to make it with biochar as a way to cut down the CO2 by a large amount.
I can envisage some places where renewables are difficult to use on large enough scale (that Russian city in the Arctic circle during winter, for one!). But just because Bill Gates has what sounds like a sensible hunch, it doesn't always pan out. Has his "condom of the future" competition had any dramatic effects, for example? Not that I know of...
More health problems with e-cigarettes
Vox has a good summary about the health issues, although it doesn't mention the unusual one that I noted before but doesn't seem to have attracted much attention (about lead coming from the heating element of some brands):
Vaping may be more dangerous than we realized
Sinclair Davidson meanwhile is still posting pro-vaping stuff at Catallaxy. I wonder if he vapes. Could explain a lot.
If only Rupert Murdoch would take it up - I'd be all for that. I'd also be happy for him to develop a late age interest in hiking Mount Everest.
Vaping may be more dangerous than we realized
Sinclair Davidson meanwhile is still posting pro-vaping stuff at Catallaxy. I wonder if he vapes. Could explain a lot.
If only Rupert Murdoch would take it up - I'd be all for that. I'd also be happy for him to develop a late age interest in hiking Mount Everest.
The dubious Ita
Look, Ita Buttrose had an affair with lumpy, married boss Kerry Packer - why should I trust her judgement on anything else after that?
Her comments about the ABC yesterday were somewhat worryingly vague, even muttering about unconscious bias and "more diversity of views". (Show us the Right wing commentators with talent as broadcasters, Ita - if Sky News at Night and talk back radio are any guide, they don't exist. Or if one wants to argue (ridiculously) that Alan Jones has obvious talent because look at his audience numbers - well, as if he is going to take a pay cut to work at the ABC.)
She was appointed by Morrison and a government that still had members who spend every waking moment unhappy that the ABC does not have hosts who agree with them. And the Murdoch press is running a "must further defund the ABC/SBS" campaign in The Australian already, as if the motivation for that is not glaringly obvious.
I don't think Ita is going to be good in the job, somehow.
Her comments about the ABC yesterday were somewhat worryingly vague, even muttering about unconscious bias and "more diversity of views". (Show us the Right wing commentators with talent as broadcasters, Ita - if Sky News at Night and talk back radio are any guide, they don't exist. Or if one wants to argue (ridiculously) that Alan Jones has obvious talent because look at his audience numbers - well, as if he is going to take a pay cut to work at the ABC.)
She was appointed by Morrison and a government that still had members who spend every waking moment unhappy that the ABC does not have hosts who agree with them. And the Murdoch press is running a "must further defund the ABC/SBS" campaign in The Australian already, as if the motivation for that is not glaringly obvious.
I don't think Ita is going to be good in the job, somehow.
Another American peculiarity
Emotional support animals on airplanes, I mean. Has any other country got suckered into this to anything like the Americans? I mention them because of this remarkable story in the Washington Post:
An attack on a plane by a fellow passenger’s emotional-support dog left Marlin Jackson needing 28 stitches, according to a negligence lawsuit filed Friday against Delta Air Lines and the dog’s owner. In the suit, Jackson claims he bled so badly that a row of seats later had to be removed from the plane.Jackson had just taken his window seat in the 31st row for a June 2017 flight from Atlanta to San Diego when the dog, sitting on the lap of the passenger next to him, lunged for his face, pinning him against the window of the plane so he couldn’t escape, the lawsuit alleges....Before he took his seat, Jackson asked Mundy if the reportedly 50-pound dog — a “chocolate lab-pointer mix,” according to the Atlanta Journal Constitution — would bite, and the dog owner said Jackson would be safe.“While Mr. Jackson was securing his seatbelt, the animal began to growl at Mr. Jackson and shift in Defendant Mundy’s lap,” the lawsuit reads. “Suddenly, the animal attacked Mr. Jackson’s face, biting Mr. Jackson several times. … The attack was briefly interrupted when the animal was pulled away from Mr. Jackson. However, the animal broke free and again mauled Mr. Jackson’s face.”Massey said teeth punctured through Jackson’s gum, above his lip and beneath his nose. He has suffered permanent scarring, the complaint says, and his attorney said he still experiences numbness in the area, and has intermittent speech issues.
This has not been the only time one of these dogs has bitten, apparently:
The alleged attack is one of numerous reports in the past few years of emotional-support animals causing trouble for airline passengers, incidents that have pushed airlines to crack down on which animals they allow on planes.In the months following the attack, Delta tightened rules around emotional-support and service animals. The airline required passengers beginning in March 2018 to provide “confirmation of animal training,” proof of the animal’s immunization records as well as a letter from a doctor or licensed mental health professional regarding the request for the support animal.When Delta announced the change, it cited an 84 percent spike in reported animal incidents since 2016 “including urination/defecation, biting” and the incident involving Jackson.
Wednesday, May 29, 2019
No laughing matter
In one of their ongoing highlights of ridiculous American hospital charges, NPR has the story of a woman (a midwife, no less) who had a pretty normal birth, and got a charge on her hospital bill for nearly $5,000 for having used nitrous oxide (laughing gas) for pain relief during the birth.
All very ridiculous (and the charge was revised down, when challenged, to around $500), but I was more interested in the fact that the gas is only coming into common use in birthing in the US recently.
My wife used it when (trying to) give birth to our son, now 19 years ago. It seemed simple, safe and helpful. But here's the story from the US:
Is there something culture specific about the degree to which Americans seem to want to go to avoid even the hint of pain? I mean, why hasn't the prescribed opioid problem been replicated in other countries? Is it innate, or a result of what strong capitalism in medical practice pushes people to expect in their (the doctors') own self interest? I mean, even the way medicines are advertised there just seems so odd to Australians. (Mind you, I recently heard a breast enlargement ad here on FM radio recently - if I were able to ban that I would.)
I may have mentioned before, but I suspect Japan might be at the other extreme of expectation of tolerance of discomfort (or used to be, at least) as I was told by a specialist there some years ago that he did gastro-endoscopy, and without any form of anaesthesia at all. But then again, I think Japanese women get to stay in hospital for days after birth. Here, I just heard of a young woman who had a two hour labour, gave birth at 2am and was discharged at 9am (!) (But there were midwife visits at home daily for the next week or so.)
Anyway, I still think Americans are a bit odd with the pain issue.
All very ridiculous (and the charge was revised down, when challenged, to around $500), but I was more interested in the fact that the gas is only coming into common use in birthing in the US recently.
My wife used it when (trying to) give birth to our son, now 19 years ago. It seemed simple, safe and helpful. But here's the story from the US:
Part of that problem comes down to the recent resurgence of the practice in the United States. In 2011, two hospitals in the U.S. offered nitrous oxide for childbirth. Now an estimated 1,000 hospitals and 300 birthing centers provide it, said Michelle Collins, a professor and director of nurse midwifery at Vanderbilt University School of Nursing.Hmm. Moved from a cheap, self administered, form of pain reduction to a highly medicalised one that removes all pain (if done properly) but also carries (I think) a very small risk of serious complication?
The use of nitrous oxide has long been common during childbirth in the United Kingdom and Canada, in part because of its low cost. Many people in the U.S. have learned about the practice while watching the popular British period drama Call the Midwife, set in the 1950s. Epidural anesthesia largely displaced nitrous oxide in the U.S. in the 1970s.
Is there something culture specific about the degree to which Americans seem to want to go to avoid even the hint of pain? I mean, why hasn't the prescribed opioid problem been replicated in other countries? Is it innate, or a result of what strong capitalism in medical practice pushes people to expect in their (the doctors') own self interest? I mean, even the way medicines are advertised there just seems so odd to Australians. (Mind you, I recently heard a breast enlargement ad here on FM radio recently - if I were able to ban that I would.)
I may have mentioned before, but I suspect Japan might be at the other extreme of expectation of tolerance of discomfort (or used to be, at least) as I was told by a specialist there some years ago that he did gastro-endoscopy, and without any form of anaesthesia at all. But then again, I think Japanese women get to stay in hospital for days after birth. Here, I just heard of a young woman who had a two hour labour, gave birth at 2am and was discharged at 9am (!) (But there were midwife visits at home daily for the next week or so.)
Anyway, I still think Americans are a bit odd with the pain issue.
Straight talking from James Comey
I like the way James Comey speaks bluntly in his Washington Post column:
The rest of his article explains, again, why it is absolute nonsense being peddled by the conspiracy loving Right (facilitated in large part by the massive propaganda campaign of Murdoch's Fox News) to be calling it a "treason" or a "coup".It is tempting for normal people to ignore our president when he starts ranting about treason and corruption at the FBI. I understand the temptation. I’m the object of many of his rants, and even I try to ignore him.But we shouldn’t, because millions of good people believe what a president of the United States says. In normal times, that’s healthy. But not now, when the president is a liar who doesn’t care what damage he does to vital institutions. We must call out his lies that the FBI was corrupt and committed treason, that we spied on the Trump campaign and tried to defeat Donald Trump. We must constantly return to the stubborn facts.
Tuesday, May 28, 2019
I think Gillette is just trolling conservatives now
Has Twitter exploded about this yet?:
A new ad campaign from Procter & Gamble-owned razor brand Gillette features a father teaching his transgender son how to shave for the first time.The video shows Samson Bonkeabantu Brown, a Toronto-based artist, opening up about his first experience shaving with his father since his transition.
Wittgenstein's rope
Add a metre to an Earth equator spanning rope and how high does it raise it off the ground?
Watch the 6 minute video to find out.
Update: for those who can't watch a video, here is an explanation from a book footnote. For a yard of extra rope, it's nearly 6 inches:
So for a metre, it's going to be something similar. Enough to trip over for the entire length of the equator.
I'm still having trouble getting my brain to accept this...
I don't think Tim will pay for a copy of this cartoon
In an article in The Australian, about Tim Wilson's (and David Sharma's) failure to get cabinet spots despite (in Timbo's case) his PR campaign on franking credits, is accompanied by this cartoon:
That's a really bad attempt at a likeness of Wilson. It makes him look about 60 and super jowly while still missing the dark circles under his eyes. Tim's probably ordering a copy to burn as I write.
That's a really bad attempt at a likeness of Wilson. It makes him look about 60 and super jowly while still missing the dark circles under his eyes. Tim's probably ordering a copy to burn as I write.
China and greening
Not sure I find this article very convincing, but it's of interest nonetheless:
China succeeds in greening its economy not because, but in spite of, its authoritarian government
There are some sceptical comments following it too: some pro-nuclear, some with a soft denier air about them.
China succeeds in greening its economy not because, but in spite of, its authoritarian government
There are some sceptical comments following it too: some pro-nuclear, some with a soft denier air about them.
A credible figure
The Washington Post did a weird weekend profile of self-hyping George Papadopolous, who claims Alexander Downer recorded him on his phone and was acting not as a dipolmat but as a spy for the Deep State that was determined to sink Donald Trump's candidacy. He looks a very believable character:
He's also only 31.
He's also only 31.
Monday, May 27, 2019
Yet more NYT reporting on those Navy UFOs
Look, it's a pretty intriguing read, and who doesn't love a good UFO mystery; but to me there are aspects of this story that still have an air of "too good to be true" about them.
It sounds like the two ex Navy personnel invovled appear a new TV show about it, so I would like to see how they come across in interviews.
One of the problems I have is that these remarkable sightings were not leaked by anyone for about 4 years.
I would love to know more, though...
It sounds like the two ex Navy personnel invovled appear a new TV show about it, so I would like to see how they come across in interviews.
One of the problems I have is that these remarkable sightings were not leaked by anyone for about 4 years.
I would love to know more, though...
Glass overboard in the 1970's
First, a memory: in about 1974 or 1975, I had my first weekend on the rather decrepit Navy Reserve training vessel TV Gayundah, being a good little Navy Cadet on a first time experience of seeing Moreton Bay and pretending to be a sailor. I remember it had anchored off Moreton Island, at night, and it was a pretty impressive sight getting up in the morning and seeing the blue, clear water and the long, pretty pristine looking island close by. (It had not, at that time, yet been overrun by 4WD on the beach.) The vessel itself was a converted "Motor Refrigeration Lighter", and the sleeping quarters were in what used to be the refrigerated hold. It was pretty cramped, old and smelly, but it had a certain old world appeal. I have found a photo on the 'net:
(Gosh, I must seem old for having been on that...)
That night, people were having soft drinks (or beers?) on deck, and at one point a kindly navy cadet officer (a school teacher in real life) called out to everyone that he had seen glass bottles floating in the water, apparently from our little ship, and he told us to be more considerate and don't throw bottles overboard. True, this may have been because we were near the island and our bottles could easily have ended up there: but still, I think that, in principle, he was sensible enough to feel throwing rubbish overboard was not appropriate.
Fast forward to 2019, and this is what twit Patrick Moore says he was doing, around the same time as my experience, when he was doodling around the oceans with Greenpeace:
That sounds..really pathetic.
(Gosh, I must seem old for having been on that...)
That night, people were having soft drinks (or beers?) on deck, and at one point a kindly navy cadet officer (a school teacher in real life) called out to everyone that he had seen glass bottles floating in the water, apparently from our little ship, and he told us to be more considerate and don't throw bottles overboard. True, this may have been because we were near the island and our bottles could easily have ended up there: but still, I think that, in principle, he was sensible enough to feel throwing rubbish overboard was not appropriate.
Fast forward to 2019, and this is what twit Patrick Moore says he was doing, around the same time as my experience, when he was doodling around the oceans with Greenpeace:
That sounds..really pathetic.
Interesting results
I wonder - would anyone who really preferred to remain have still voted Labour? It did have a remain faction of politicians, didn't it?
To really provide a definitive resolution as to what should happen according to public opinion, wouldn't you need a referendum with three choices (hard, soft, or no exit), and with some form of preferential voting?
Australia is much more sensible this way.
Heatwave in May in Japan
Some extraordinarily high temperatures being experienced in Japan this May, particularly in the normally cooler Hokkaido:
Why are libertarians such numbskulls on this matter?
Two die, nearly 600 taken to hospitals nationwide as heat wave hits parts of nation Unseasonably hot conditions gripped wide areas of Japan on Sunday, with the town of Saroma in Hokkaido setting the highest temperature ever recorded in the country for the month of May.But Australian libertarians and tax haters just had a weekend conference with "star" Australian denier Jonova giving a talk.
Two men — one in Shimizu, Hokkaido, and the other in Tome, Miyagi Prefecture — died and at least 575 people nationwide were taken to hospitals by ambulance suffering from symptoms that appeared to point to heatstroke, according to data compiled by Kyodo News.
The mercury hit 39.5 degrees in the northeastern coastal Hokkaido town at 2:07 p.m. Sunday — the hottest at any observation point in Japan for the month, according to the Meteorological Agency. The previous record, set on May 13, 1993, was 37.2 degrees in Chichibu, Saitama Prefecture.
Why are libertarians such numbskulls on this matter?
Hindu nationalism
This does seem a really good explanation about how Hindu nationalism has evolved (and why Modi is a worry.) It starts:
And then the key paragraphs:
The city of Varanasi is the holiest site in the Hindu faith. It is also, not coincidentally, the parliamentary constituency of Modi, who has just won a second five-year term. He did it, in large measure, by emphasizing Hindutva, an ideology that seeks to reformulate Hinduism into something that most practitioners’ grandparents would barely understand.
And then the key paragraphs:
The term Hindutva can be (sort of) translated as “Hindu-ness,” and that gets (sort of) at what it’s all about: Hinduism not a theology, but an identity. The movement’s intellectual father, Veer Savarkar, wrote its foundational text (helpfully titled Hindutva) a century ago. At the time, the notion of a unified faith or doctrine, let alone a shared identity, would have left most Hindus simply confused: Identity was determined by a person’s family, village, caste. The very term Hindu is merely a loanword (most likely from Persian), referring to “the people who live across the Indus River.” Until the 20th century, most Hindus had never felt the need to describe themselves in any comprehensive way.So, it's identity politics that have taken over.
It was the colonial experience that created Hindutva: Why, Savarkar and his comrades wondered, had India been dominated for centuries by a relatively small number of Muslim Mughals and Christian British? Was monotheism simply better suited for ruling? If so, what did that mean for a faith with more deities than days in the year? During the founding decades of the Hindutva movement, much effort revolved around making Hinduism more like its rivals: building a single shared identity to unite everyone for whom India was, in Savarkar’s words, “his Fatherland as well as his Holy-land.” This definition conveniently roped in Sikhs (a disproportionate number of whom served in the army), Buddhists (whose spiritual cachet helped give the movement credibility), and Jains (who tended, then and now, to be quite rich).
What it pointedly did not do was dictate what this newly lumped-together group of people should believe. Indeed, very few of Hindutva’s leading lights have been holy men, or even particularly devout; Savarkar and K. B. Hedgewar (the founder of the Rashtriya Swayamsevak Sangh, or RSS—the primary vehicle for Hindutva mobilization) are both described as having been atheists or agnostics. The point wasn’t doctrine, but branding.
The problems with mass migration to space
The Guardian has an opinion piece up expressing scepticism about the likes of Jeff Bezos's dreams of O'Neill style massive space colonies and colonisation of Mars. It's not at all detailed, though, on the technical issues: it more looks at the changing motivation for space colonisation, and notes that it is pretty much now advocated out of environmental concern.
I don't think the change in motivation makes much sense, though.
As I recall (and I am not going to bother searching for confirmation just at the moment), the issues that killed off O'Neill style colonies from popular consideration were:
a. more careful engineering consideration which indicated that the structural stresses on spinning such massive objects to get any decent form of artificial gravity were much higher than initially realised, and pretty much impractical using the initially assumed materials;
b. the number of rocket launches required to put so much equipment in orbit (even assuming using a slingshot on the moon to get raw materials into a processing facility) was going to put an awful lot of pollutants into the upper atmosphere, with possibly deleterioius atmospheric effects;
c. the new technology involved for orbital processing of lunar soil is completely untested and getting that alone to work is surely going to be a big enough task in itself.
As far as point b is concerned, I seem to recall O'Neill addressed that himself when he was alive, and argued it wasn't that many launches. But the Falcon Heavy rocket from Space X does use kerosene and liquid oxygen, and it will be putting a significant amount of CO2 into the atmosphere. Not sure how much compared to other things, but it is ironic that in order to escape a greehouse Earth, some now propose adding to the problem on the way out.
I don't know if point a has been reconsidered - but I suspect that it is still a very real problem. It might be able to be addressed by using strong materials you can make on Earth, but O'Neill colonies were supposed to be made from pretty basic materials and I find it hard to envisage making more than pretty basic metals in orbit from Moon dirt. It's yet another technological hurtle that would be ridiculously hard to overcome without launching, in pieces, manufacturing equipment made on Earth.
I see that Bezos went to Princeton when O'Neill was there - hence he caught the O'Neill dream early on.
But really, I would have to hear how he thinks the problems I listed above are supposed to be addressed before I consider it as having any real credibility.
The thing is, the problem with greenhouse gases was barely a thing when O'Neill was writing his book in the mid-1970's. More general concerns about industrial pollution were one of the motivations for talking about moving off planet. But now that the AGW problem has been fully realised, dreams of a "let's just move into space" solution (apart from the possibility of microwave power from orbiting solar power satelittes) just seem a fanciful and wasteful idea compared to putting a lot of technological effort into clean energy on Earth.
(Having said that, I still think having a smallish, permanent base on the moon to act as a "lifeboat" for Earth is a good idea. And it is so much simpler to get stuff there and back than from Mars. Once you learn how to run a viable colony there, then you might think about going to Mars.)
I don't think the change in motivation makes much sense, though.
As I recall (and I am not going to bother searching for confirmation just at the moment), the issues that killed off O'Neill style colonies from popular consideration were:
a. more careful engineering consideration which indicated that the structural stresses on spinning such massive objects to get any decent form of artificial gravity were much higher than initially realised, and pretty much impractical using the initially assumed materials;
b. the number of rocket launches required to put so much equipment in orbit (even assuming using a slingshot on the moon to get raw materials into a processing facility) was going to put an awful lot of pollutants into the upper atmosphere, with possibly deleterioius atmospheric effects;
c. the new technology involved for orbital processing of lunar soil is completely untested and getting that alone to work is surely going to be a big enough task in itself.
As far as point b is concerned, I seem to recall O'Neill addressed that himself when he was alive, and argued it wasn't that many launches. But the Falcon Heavy rocket from Space X does use kerosene and liquid oxygen, and it will be putting a significant amount of CO2 into the atmosphere. Not sure how much compared to other things, but it is ironic that in order to escape a greehouse Earth, some now propose adding to the problem on the way out.
I don't know if point a has been reconsidered - but I suspect that it is still a very real problem. It might be able to be addressed by using strong materials you can make on Earth, but O'Neill colonies were supposed to be made from pretty basic materials and I find it hard to envisage making more than pretty basic metals in orbit from Moon dirt. It's yet another technological hurtle that would be ridiculously hard to overcome without launching, in pieces, manufacturing equipment made on Earth.
I see that Bezos went to Princeton when O'Neill was there - hence he caught the O'Neill dream early on.
But really, I would have to hear how he thinks the problems I listed above are supposed to be addressed before I consider it as having any real credibility.
The thing is, the problem with greenhouse gases was barely a thing when O'Neill was writing his book in the mid-1970's. More general concerns about industrial pollution were one of the motivations for talking about moving off planet. But now that the AGW problem has been fully realised, dreams of a "let's just move into space" solution (apart from the possibility of microwave power from orbiting solar power satelittes) just seem a fanciful and wasteful idea compared to putting a lot of technological effort into clean energy on Earth.
(Having said that, I still think having a smallish, permanent base on the moon to act as a "lifeboat" for Earth is a good idea. And it is so much simpler to get stuff there and back than from Mars. Once you learn how to run a viable colony there, then you might think about going to Mars.)
A handy reproduction chart
I don't think I can copy and paste it here, but Axios has a nice interactive graph showing the national reproduction rates around the world.
Basically, poor African nations are still having babies at a very high rate - but China, the rest of East Asia, the US and Europe are not having enough to replace population. India's rate is not so high now either.
Basically, poor African nations are still having babies at a very high rate - but China, the rest of East Asia, the US and Europe are not having enough to replace population. India's rate is not so high now either.
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