Which book did you get? Curious to find out what's in it.
> ... so disadvantageous in an evolutionary sense? Environmental factors (such as staring at a computer screen...)
Well if you're arguing that it's a nurture thing, there are plenty of us who had bad vision at childhood, right from before the dawn of the computer age. You could say that it was not computer screens but books that caused it, but how far back can you make this argument? Any sources for this claim?
> ... so disadvantageous in an evolutionary sense? Environmental factors (such as staring at a computer screen...)
Well if you're arguing that it's a nurture thing, there are plenty of us who had bad vision at childhood, right from before the dawn of the computer age. You could say that it was not computer screens but books that caused it, but how far back can you make this argument? Any sources for this claim?