This is not a subtweet of anyone in particular and it's going to annoy some people since I have a lot of PhD followers/friends and also I'm a stubborn guy myself but...one thing I'm noticed is that once someone gets a PhD, it become 10x harder to convince them they're wrong.
I've found that PhD's: * Know the arguments and counterarguments for everything * Probe domain knowledge and ability to formalize first as a heuristic to find out if it's even worth going past 101 level arguments * Stonewall "plebs", otherwise follow comparatively humble scripts