The World In 2400, Ctd

Manzi replies to Ezra Klein:

When thinking about time after 2100, we have, in cartoon terms
choices: (i) simply treat it as unknowable fog, or (ii) attempt
guess. I think that if we take the first choice, then we simply try
forecast through the next century, and let future generations
about the world beyond 2100 (though I'll point out that it is a
unusual political debate in which we call trying to manage the
world for about the next 100 years as...