I had to face that grind when I was younger too, but I swore I'd never ask a question someone shouldn't be able to work out on the spot under the stress of an i

I had to face that grind when I was younger too, but I swore I'd never ask a question someone shouldn't be able to work out on the spot under the stress of an interview. My strategy is to take that question and expand on it in a fun way - touching different topics the candidate feels comfortable with. Make it concurrent? Solve it in the type system with Peano numbers? Etc... To me, tech is fun and I try to make the interview and fun and interactive as possible! But it does also help keep people out who literally can't code, which somehow still pass previous rounds.