Judging inequality

Tim Worstall has an interesting article on judging the morality of income inequality, especially when it comes to globalisation. His conclusion:

Leaving all other matters aside, we expect globalization to produce a rise in income inequality in the United States (and the other industrialized societies). We also expect it to raise incomes in the poor countries and thus reduce global income inequality. That does indeed seem to be what is actually happening.

Whether this is a good or a bad thing to be happening is another matter entirely, that depends upon our own moral senses....

....in this particular instance I find that my own answer is quite simple. Those poor who are getting richer in other countries are not moving from one level of luxury to a slightly higher one. They are moving from destitution, from not knowing where the next meal is coming from, to something close to a middle class income. They are doing this in their hundreds of millions, across the globe, and that has to be a good thing.

Note that he hasn't mentioned the issue of income mobility in the United States too, which is relevant to the morality argument too.