Uncomfortable question: Is the world overpopulated?

[LAKISYLVANIA]

The world can if efficiently handled, handle a population of 20 billion people. Problem is that a lot of people live in luxury and even if our population would decrease over time, that development countries citizens would increase their environmental footprint. You basically all need to live as Cubans if you want to house 20 billion people. In the system we currently have, the world is indeed overpopulated, and a two child policy would help especially in third world country where growth is enormous, and the population grows too fast to ensure growing welfare for those citizens.

It looks like a simple question, but the answer is much more complicated and difficult to answer. But if you want a short answer, the answer is no. But is it practically achievable, i don't think so.