>My litmus test is the Gershgorin circle theorem. Every so often I check if I can still prove it, and if I do I try to review the surrounding matrix. I will lit

>My litmus test is the Gershgorin circle theorem. Every so often I check if I can still prove it, and if I do I try to review the surrounding matrix. I will literally vote against hiring anyone who can't at least handwave why that's true. Interesting comment with no context—i.e. not hire someone for what? I don't know if I would ever not hire someone for not understanding a math problem (unless the job was heavily math related in the sphere of the problem). I would definitely not hire someone who communicates as ineffectively as you did in this comment.