James Fadiman is a grown-up who knows a lot about a thing called psychedelics. Psychedelics are special plants or chemicals that can make your mind feel like it's going on a big adventure. Some people think they can help make you feel better, but they can also be kind of dangerous if you don't use them the right way.
James Fadiman is like a teacher who tells people how to use psychedelics in a safe and helpful way. He tries to help people understand how they can use psychedelics to learn more about themselves, be more creative, and feel happier. But he also teaches people about the risks and dangers of using psychedelics, so they can use them safely and avoid getting hurt.
So, basically, James Fadiman is a grown-up who helps other grown-ups learn about psychedelics and use them safely so they can have a good time and feel better.