[prats226]

Isn't it because there is a difference in your field and other fields?

1) Scope - Other fields like law, medicine atleast are impacting one unit at a time, vs software which is impacting large number of users through your work. I am sure research interviews will go through similar process?

2) Feedback - Just basis past work, you would get a good sense of their aptitude. Very hard to do it in programming without you spending a lot of time going through their work?

3) Subjectivity - Wrt coding, very good way to get objective output in interview by getting other person to write code, can't do that in medicine for example?