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

It’s also how population works.

Let’s assume that on average, ppl have 2 kids.
So if there is only 1 couple, they have 2 kids so population grows by 2

Now let’s assume there are 2 couples, they each have 2 kids- so now population grows by 4. So the next generation, it will Keep growing exponentially