It's funny that the post states: "None of these band-aids really help — we still all hire tons of false positives (unqualified) and turn away false negatives (actually qualified), despite every attempt to make the process perfect, or even good"

The post touches on it (regulation about firing causing legal issues) but the unfortunate truth is that turning away false negatives has little cost to a business as long as you make sure to turn away false positives. Bad hires are extremely expensive, where as the lost revenue of turning down a good hire isn't nearly as bad (it's easy to try to hire them again later).

The stamp idea is good, reputation based hiring is important, as shown by the use of referrals in hiring. I've always wondered why we don't keep track of referrals inside companies in order to figure out who is recommending their peers who legitametly are good fits, vs those who are just trying to help out friends (who might not be the best hires).

Further I think there is also the problem that anti-corruption/anti-nepotism often harms hiring. It's much easier when working in a start up to hire the most talented people you know without other people sitting in, compared to at a big company where I know people who actively know good people they want to hire, but who can't be arsed with the long interview process and high chance of rejection.

If it wasn't for the regulation around firing some sort of staking your job on the line would be effective. You can refer someone and have them skip most of the process but your job is on the line if that was a bad call.