what i think that every problems about financial crisis and everything else is only imputable to one thing, that everyone is underestimating, this is the overpopulation
if we were 1B at max i'm sure this world would have been a better place, from every point of view
You can enforce a policy like in China, each couple are only allowed to have one child. So that population will start to decrease after some generations
Even so, I think that the advance in technology would still outpace the speed of population decrease, so that even you get less and less human on earth, there is still more and more people become jobless
The problem is rooted from the market based economy: In a market economy, you have to give out something in exchange for something, so called fair trade principle. So when some powerful entity with millions of robots can produce anything you need but demands nothing from you, they can let you starve without feel bad, because you can not provide anything that they need, thus no trade will happen (jobless)
Why there is a such fatal flaw in market based economy? Because it is established in a very old environment where many demand can not be satisfied due to low productivity and low technology level
So how to deal with a society with high productivity and less future demand? The prevail solution is to give welfare to those who can not produce anything useful, keep them a decent level of living: Anyway the society can afford it due to extremely high productivity
But this model is against market based economy, because there is no fair trade in this process, the producers should not give out products for free. So in order to make it happen, the government will pay a fair price to those producers by handling out social security check to jobless people, and these money are either gathered by taxing producers or borrowed from future (inflation taxes everybody)
The question is: Is this way long term sustainable?