> We would still do it if there was licensing. Doctors and lawyers still interview for jobs.

People interview in most jobs, but people in licensed professions don’t generally have exams testing minimal professional competency in interviews because assurance of minimal professional competency is delegated to the appropriate professional licensing body, which implements entry exams, continuing education requirements, professional complaint/discipline processes, etc.

Minimal competency screening is abstracted out to a reusable, memoizing, component.