Exactly. The previous poster doesn't seem to grasp the nature of stress and its variants relative to the social or work situation.

To echo your point, fixing a bug with someone you just met standing over your shoulder clock ticking, is nothing like fixing a bug at your regular place of work.

In an interview, if you don't perform the task well, you can fuck off back to the street where you came from. In your job, you get to ask colleagues, consult previous project code, refer to in-house or external documentation, and calmly analyse to figure it out under your own "in the zone" steam.