Professionally speaking, if you're not an academic researcher, I think "specializing" is mostly synonymous with pigeonholing yourself into a worse job market.

Professionally speaking, if you're not an academic researcher, I think "specializing" is mostly synonymous with pigeonholing yourself into a worse job market. Also, this might be more controversial but I don't believe in "interesting fields". In the industry, the interesting part comes from the ambition / novelty / stakes / impact of what is being undertaken.