Why has the human population increased so much in the last few centuries, although we actually invented effective birth control methods?

Question

Why has the human population increased so much in the last few centuries, although we actually invented effective birth control methods?

In: 211

Answer 1

Flush toilets.

Penicillin.

Cheap power.

It changes the number of people dying young – instead of lots of kids dying from disease and accidents, and then only a small percentage making it to old people, we now have almost all the kids making it to adulthood and becoming old people.

eventually people stop having lots of kids, but that takes anywhere from 40-100 years to catch up.