In the 200s BC
Aristarchus of Samos invented heliocentric cosmology. But by this time, the Greeks were already in decline, so the people were just too stupid to appreciate what he had done. It wasn't until the 1500s AD that
heliocentrism was considered again. And what made this possible was that various eugenic forces had lifted European intelligence to a level where people could again have sound judgement. The point of this story is that great ideas are utterly worthless in a populations of morons, and humanity has again become universally moronic, so great ideas currently have absolutely no value.
What is one's legacy after death? One's genes and one's ideas. I see nothing else. In my personal case, I have had a few significant ideas, but people are mostly just too stupid to understand them. In the realm of programming, I came up with
a significantly better parsing method and
a better approach to thread safety. In the realm of human history and society, I came up with
a better explanation of the decline of civilizations and
a solution to this problem. Of course the solution is Arkianism. And of my ideas, this is the only one that matters because without a eugenic solution, both my genes and my ideas are doomed.