We probably won’t ever hit 11 billion contiguous humans. At least not without colonizing Venus. The birthrates worldwide are dropping quickly, and every time another country passes through the Industrial Age, into the Modern Age, their birthrates fall off a cliff. I suspect we will eventually stabilize around 9 billion people, which is a few billion lower than the maximum projected sustainable population of The Earth.
We probably won’t ever hit 11 billion contiguous humans. At least not without colonizing Venus. The birthrates worldwide are dropping quickly, and every time another country passes through the Industrial Age, into the Modern Age, their birthrates fall off a cliff. I suspect we will eventually stabilize around 9 billion people, which is a few billion lower than the maximum projected sustainable population of The Earth.