Sigh. If you hire using know it or not questions about binary trees, then you finally get to hire people who can study up and answer that specific question in a manner Pavlov would approve of.<p>That does not mean the candidate will be able to design clean APIs, know how best work with different types of data, or even how to troubleshoot existing code.<p>Still, pat yourself on the back, I mean, your entire team can answer a specific trick interview question, and that&#x27;s all that matters, right? Right?<p>Sigh.