That's a variation of "if all you know is hammers, then everything looks like a nail". That's certainly an aspect of it, but I'm not convinced it's the entire s

That's a variation of "if all you know is hammers, then everything looks like a nail". That's certainly an aspect of it, but I'm not convinced it's the entire story. It would be interesting to see studies on how prior careers/specialities affects one's decisions in new specialities.