[d3w4s9]

Correction: most PhDs in scientific fields don't know what unit tests are. Nobody ever taught/told them to write unit tests, and they have never heard of them, have never seen one, let alone written one.

(Someone with a PhD degree here.)

[wiz21c]

I only know the PhD's students in my lab and they don't write unit tests. But now I'm there, I do my best to explain them why they should :-)