Question

How does delay marriage help for popoulation managment

Answer 1

Answer:

For fun, let us simulate such a system to see what goes on!

We will model a simple system, seemingly unrealistic but with features sufficiently similar to the real world.

Two populations start with 10000 people each born at time T=0T=0

Every individual in the first group has one child at the mean age of 25 (normal distribution, standard deviation 2) while the second group has children at the mean age of 30. If one-person procreation seems too weird to you, think as if we are only accounting for women in the population

People start dying from the age of 50. In the first year, the probability of death is 0.005. The probability of death at a given year keeps increasing by 0.005 per year after this.

We let the two groups evolve, keeping track of the population pyramid with five-year brackets. The code to do this can be found here.