Hey /sci/, what are some good Youtube videos/things to read relating to:

>the brain, things it can do
>mental illness, or just psychology in general if it's interesting
>time travel if it's believable
>interesting paradoxes, thought experiments, puzzles
>advanced technology

Not just anything, because I can learn these with a simple google search. I'm looking for things that are more, I don't know, "out there." Maybe even pseudoscience.