Hacker News is full of engineers. The tech discussions are usually useful and interesting, but the moment they go into non-technical stuff? You will see how arrogant they can get—often blind to their own ignorance. I have know sharp engineers in real life too, and a lot of them are also closed-minded and cocky. The exceptions? Usually folks building mission-critical systems or complex infrastructure, where mistakes can be catastrophic. Watch "core" torch their reputation by refusing to course-correct, just doubling down until it is all gone.