If "before IT" is something like 1960, them, well, the world population was 3B. Also check the levels of deaths from starvation and from infectious diseases, and the cost of food.

No, moving the right "papers" with high speed has made a serious difference.

I was intentionally vague. People seem to read some opinion in it? (given the up and down voting) I have no idea what it means, its just an interesting fact. All I know is that doing it without moving paper was much harder before computers. I didn't mean to say: Because lobsters couldn't do it neither can we. Nor: We have computers now, everything is easy! IT just dramatically changes the puzzle. Not sure we should try history based prediction.