Reply #11: I don't think you need to postulate any sort of special case for humans at all...

[hunter]

We're animals and our population dynamics are those of animals.

"Intelligence" exists only in the eye of the beholder. We humans happened upon some biological adaptations that resulted in the near exponential growth of our population, but this growth will not be sustainable and our population will collapse.

What small choice we have is how miserable this population collapse will be. We will do it the old fashioned way with lots of people dying in utter misery, having babies who will not survive, or we will simply evolve some means of limiting our numbers, which is what happens in most animal species like ours that must make a very large investment in their offspring.