I don't think there's perfect symmetry. A bad programmer can get stuff done but leave a time bomb of bad code which would be hard for a non-programmer to detect

I don't think there's perfect symmetry. A bad programmer can get stuff done but leave a time bomb of bad code which would be hard for a non-programmer to detect. Sales results are easier to measure than programming. That said I'd have very little confidence in my ability to measure a salesperson at interview-time.