More importantly.. will they know "up" from "down".. or even "male" from "female?"
It's hard to imagine what life will be like 100 years from now, let alone 500. If someone was asked in 1924 his expectations for America 100 years in the future, he probably would not have gotten much of it right. Someone alive in 1524 would have had no inkling of most of the inventions we take for granted or any idea of how people would live.
All we can do is take it one day at a time. "Tomorrow and tomorrow and tomorrow creeps in this petty pace from day to day," as Shakespeare said.