I think your point is actually a good one. You do need deep proficiency to be able to use data structures creatively. I think your tone is just giving me an ane

I think your point is actually a good one. You do need deep proficiency to be able to use data structures creatively. I think your tone is just giving me an aneurysm. My objection is that somebody who had been working with a narrow intensity in a specific field could be a very capable programmer without having the sort of general proficiency to do well in this kind of interview. That doesn't mean they are a 'product engineer'. It just means they are somewhat specialized.