I'm just imagining interviewing a candidate for a job involving embedded systems and this dude pulls this out at the end and says "If you have any other questions, my email's right on there."
I mean, the candidate can design and build innovative custom hardware, but do they remember an obscure impractical algorithm from a second semester CS course? No? Obviously not a fit for this company.
(This assumes that the guy passed through the resume filters and advanced to the in-person stage, which is not that easy. Should work on a video call though.)
