@literary One interesting thing is that the lenses are only in one direction. You have a bunch of vertical ridges. So it must be made for the effect of moving your head left to right instead of up and down. Or maybe they use two layers of the stuff.
@literary I included a few pictures above. Based on Nye's explanation, I guess they have a photograph and send laser light through it which gets refracted through the sheet. Even just looking at normal light through it smears the light around.
@clarkgoble I think autonomy is a worthy goal. But eliminating hunger and insecurity seems to be an equally worthy goal. Ideally, we can offer people both, by, for example, giving them a universal income and letting them decide what is important. :)
@clarkgoble There are many things which tend to make one poor. Disability, being too old or young to work, lacking in skills, having people around you which you need to spend time and money to take care of, etc. But these needn't result in poverty.
@rolandish Hmm. There are definitely some polities that seek to isolate themselves from others. And the project of many people with wealth is to retain and then transfer that wealth to their children. But there is a lot more going on as well.