>Tell the people you hang out with and I'll tell you who you are
I came across this saying recently and it made me realize the people I hang out with are not who I want to be

What are some nice community spaces, other than 4chan for:
- physics/math
- computer science
- finances
- philosophy

The smaller the group and the brighter the individuals on it the better. Tips on how to find these communities would be appreciated to as I imagine the best ones are not out in the open else they'd be crowded and not be as good anymore