I’m not sure how to answer this comment.
We can end hunger. We have the technology to do it. It is just a question of money and the will to do it the right way.
As for ending war, that’s the rest problem. We could eliminate a lot of problem spots but lack the will to use the necessary weapons. Won’t go into details but it could be done.
Red China and the emerging newly armed Russia are the international problems.
However, I’m not “changing human nature”, just eliminating some of those who are causing problems.