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Originally Posted by Thunder Bow
First, understand Science and Technology is Not Magic. It has limitations. 11 billion is way to many people for a land of abundance, that you speak of. Survive? at what price? Our technology is still primitive and frail.
We can orbit a tin can around the Earth, Take a few steps on the moon, and operate a toy RC Model Car on Mars. But that is a far cry from mass exploitation of resources in Space. The cost and the amount of energy to do it, would be prohibitive. Look at how much our current space program is suffering due to budget costs.
The Human Mind has limitations, just as any animal has. It is not Magic. Technology we have is very frail. Subject to natural and human forces. When our world dies, we will die with it. It is just that simple.
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The survival of 11 billions means in the context of my post to live decently. I mentioned the problem of population 30 years ago, and we managed to feed them all and most of them got even better lives.
It took just 8 years to put a man on the moon since the decision was made by Pr. Kennedy. I agree NASA and other space exploration missions have budget cuts due to lack of interest in the political sphere, but this will slow things down, not stop them, and we are capable of great things.
We have limitation in brains in the sense that we need to get more people to be interested in science, because the more brains we get the more innovations and technologies we get and the better lives we will have.
Probably you are right that we are bound to Earth, and what ever happens to it will affect us, but even though keeping an optimistic view of the future may not allow us in reality to be a galactic civilization, at least we would have tried our best to save our species.