[Haise takes note of the direction she's pointed, veering toward the crowd. Although he has to be careful to avoid the pools that have formed where rock dips away in shallow pockets, he doesn't lose stride]

Do you think it might have anything to do with their Gifts? If they relied on powers over physical labor before, it might have affected their development.

[That is, of course, speculation on his part. Something like that would have occurred over an incredibly long period of time, many generations over, and there's no way to test whether that is the case. Particularly not when their means to learn about Nalawi physiology are so limited]

Though I guess whatever the reasons, the bottom line is we have to work with things being what they are.