Of course, if the losses from immigration restrictions are greater than
you might think, the gains of weaker restrictions are also greater than
you would think. When you double the number of immigrants, you will be
admitting a lot of people with a lot of surplus, not just marginal
Well, we have reaches a level of life exactly equal to our own, and we
haven't colonized anything beyond our planet. The tehnology is
probably there, but the costs are high and the benefits are unclear.
The same maybe true 200 years from now.
(Gee, I hope this is on topic!) Anyway, a
