Especially when the company says they aren't necessarily looking for the most bit perfect compilable code or even that you output the optimal algo on first try. Rather they want to see how you think through problems. Well now you're back at a subjective assessment again which inherently can have hidden biases.
After failing several of these "let's see how you think" technical interviews, I've come to the conclusion that the way I think is deeply and fundamentally flawed.
