So most of the world is living like only thirty or forty percent lives today?
Yeah the majority live poor lives, which is why all of them are so eager to pass the test, so they can go to the island. It's sort of like today, when parents encourage their child to get a degree so they can get a good job etc. Except here everything is aimed at that one chance they get, when they reach the age of 20. That is their ticket to a better life.
Can you explain this selection process? What are the selectors looking for?
The tests are suppose to check for those, which are simply better than the rest and worthy of being part of the 3%, so it's everything from how they handle situations under pressure, to performing IQ looking things, and how much they are willing to sacrifice for the island.
How would sterilization be any inconvenience? You can live a much more prosperous and secure life with no children. You have much more flexibility and many more opportunities. I can't figure out why anyone would want children at all, in a modern society where family wasn't the only support system or security in old age.
For a lot people family is important.
Population is, after all, the cause of all the widespread poverty. Too many people chasing ever diminishing resources; living beyond their region's carrying capacity.
I guess that is one of the points with the tv series, the 3% live in luxury while the rest live in poverty and just have to try to survive as best they can. Obviously there is a lot more to the tv series and what is going on than what I can explain here, as I don't want to spoil stuff and because its not really important for the scenario I original presented
Alternative: Worldwide one or two child policy, with tax breaks for no children, till resource usage = resource replenishment.
For the most part around the world, especially as people get richer they tend to get less children. Besides that, a poor african family like this (Just an example, no idea if they are even one family):
Adding up all the pollution and pressure this one family puts on the environment throughout their whole lifetime, is probably far less than what a single western child does in their lifetime. So when that child grows up and buy a house, car, bicycles, mobile phones, computers, tv, cloth etc. Including what their parents spend on them in diapers, plastic toys etc. when they were small. The family in this picture, will probably never have any of those things and therefore pollute far less.
So the issue as I see it, is not really overpopulation it is how we decide to waste resources, because we are taught from a very young age that we need to spend money, we are presented with so many nonsense options of things we have to buy to be happy. Our economy requires people to go out an constantly buy all this useless trash. How many people get anything repaired today? If your washing machine breaks, its almost cheaper to buy a new one, rather than having to repair it. Items are created so they are almost impossible to repair for a normal person. We use and throw away, because that is what keeps things running. That is the true issue if you ask me, its not that these poor families have more children than a rich one. It's the system that is broken.
If you look at the average amount of children people gets, for the most part in countries with wealth its just below 2, which means that the population growth is stagnating in those countries. However the amount of children people gets seems to have a close connection to how poor a country/people is.
Here is a list of average number of children women gets in a number of countries.
The World Factbook — Central Intelligence Agency
So as people get richer, better educated, if women go to work as well, and is not home running the house. The amount of children they get will automatically fall as a result.