Filters and UFOs

As David Roberts tweeted:

The news that there seem to suddenly be lots of things worth shooting at in the sky is certainly a bit surprising.

This explanation has been anonymously given to WAPO:

The incursions in the past week have changed how analysts receive and interpret information from radars and sensors, a U.S. official said Saturday, partly addressing a key question of why so many objects have recently surfaced.

The official, speaking on the condition of anonymity because of the sensitivity of the issue, said that sensory equipment absorbs a lot of raw data, and filters are used so humans and machines can make sense of what is collected. But that process always runs the risk of leaving out something important, the official said.

“We basically opened the filters,” the official added, much like a car buyer unchecking boxes on a website to broaden the parameters of what can be searched. That change does not yet fully answer what is going on, the official cautioned, and whether stepping back to look at more data is yielding more hits — or if these latest incursions are part of a more deliberate action by an unknown country or adversary.

So, the suggestion seems to be that if something was moving slowly, like a balloon, it was filtered out deliberately.   Given the number of weather balloons that go up daily, I guess that makes sense.    

Was it with the knowledge that countries don't care, so to speak, about balloons that China decided that it was a good way to gather intelligence?

Anyway, this reminds me that I read somewhere, many years ago, perhaps in a UFO book on my shelf, that some guy claimed that the US radar systems ignored objects that were going too fast; and if radar tracks were re-examined to check on objects doing really weird fast things in the atmosphere, there might be actual proof of alien visits already.

This always sounded a bit dubious, given that ICBMs move very fast.   But, digging back in my memory, I think the point might also have been that the lines of radar that are the missile warning system are mainly looking outwards from the continental USA, and not over the mainland USA itself so much.   (It's too late once they are over Washington.)  So a visiting UFO that zooms down and over a 1000 km of mainland USA and back into space might be considered something that could be safely ignored.

I would love to know if there is any truth to that.  

But we do at least seem to now know, as I posted last week, that there are surprising gaps in what the USA knows is in its skies....

Update:   a valuable thread on Twitter: