>Being a professional programmer is not an entirely stress-free job. Often, time matters and you have to think on your feet

Not once in my career had I had to fix a problem in an hour, let alone 10 minutes.

I have had senior people get mad at me when I couldn't give an answer during a meeting - that's the closest to an interview type scenario where you need the answer now. But even then, I did not stress that I'd lose my job, which is similar to the stress the candidate is facing.