I work in a relatively large field. But if you asked me the biggest mistake that I made early in my career, I would probably tell you that back then I acted like it was a much bigger field. There are very few things you can do secretly in my field. Everyone knows what everyone else is doing, pretty much. And everyone knows who the good referees are, who screwed who (figuratively and literally), and so on.
It’s a small world afterall.
I am going to have that damn song in my head for the rest of the night.