A better source of energy solves any limitations on water and food. And "waste carrying capacity" is another term for pollution - as I said there are better ways to manage pollution.

Yes that takes technology, but the problem is mismanagement of resources, we aren't running out.

"The situation we’re in isn’t a looming wall that we’re doomed to crash into. It’s a race – a race between depletion and pollution of natural resources on one side, and our pace of innovation on the other."

- http://blogs.scientificamerican.com/guest-blog/the-limits-of...