This is an all-too-common tale on HN: a debrief on a job interview failure in which the author blames the system ("Why would I need to reverse a binary tree in

This is an all-too-common tale on HN: a debrief on a job interview failure in which the author blames the system ("Why would I need to reverse a binary tree in the real world?) or their own circumstances ("I'm a self-taught founder with 10+ years of experience, and never had to reverse a binary tree"). The better take away from these essays is that one should just study for these tech interviews before starting the rounds and learn how to reverse a binary tree.