Count the fingers in your head or out loud. They may have the wrong number of fingers, the number may change while you try to count them, the fingers can be deformed and keep on changing when you look at them.

Ah shit, my suspicion was correct - I’m an AI, and a bad one at that. Now I know why the world around me doesn’t feel real.

World of Warcraft plugins and Awesome WM configs. There are some decent 2d game engines that use Lua too, like Love2d!