Got minor example/vent:
Started a new STEM position recently, when I was hired my position included fields outside my area of expertise, but I was told I'd be collaborating with other people that had experience in those areas. And they were helpful, for a short time.
One of them vanished after like a month, and since then I learned how to do the shit we needed him for on my own from researching a bunch of papers online, fucker didn't even share his work notes after I personally helped him out. Another one is really helpful on the method and procedure side, but hasn't been as helpful on the scientific interpretation of our data, seems to mostly agree with whatever I say.
Both are some variety of jeet, the latter one has been the best one I know to be honest, in my field I've run into the usual over promising, blame shifting incompetent jeet, and one of those got drunk and promised every guy at the party he would cut their balls off. Score is about 2 good jeets to about 15 bad jeets,
Edit: forgot to mention the first jeet did half the shit wrong and after doing some google searching and literature reading found a better and more durable procedure.