My hope is less than four billion, give or take a hundred thousand.
We will probably had that joanveronica was talking about, but my hope is that we will have displaced a good billion people off planet to help with our population control.
If not, with an additional billion people every six or seven years there will be over
21 billion people on Earth. And I don't think it will be a pretty picture as far as living conditions, quality of life, or politics.
No, not pretty at all...