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That advice seems like unnecessary mental gymnastics.

Just take an unseen technical problem, solve it for the very first time in front of a colleague, then double your time as the expected time for candidates in an interview.

When you're under time-pressure, you actually spend more time thinking about how much time you have left, rather than thinking about how to solve the problem.

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It's not mental gymnastics. The point is to challenge yourself as an interviewer to reveal a diamond in the rough. Some people suck at interviews and are great at coding. I've hired a lot of them and we've made a lot of money together. I've never had to fire anyone either so I'm not getting false positives either.

> Just take an unseen technical problem, solve it for the very first time in front of a colleague, then double your time as the expected time for candidates in an interview.

That gives very poor signal in my experience due to the time pressure. Your process is now selecting for people who are good at taking tests instead of selecting for good engineers.

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