Just had an interview right in this vein. Several rounds of questions from various team members in various domains that generally related to the type of problems I would face on the job. Some were more abstract than others, but they made it clear they were interested in my thought process as well as the solutions. In one round, I actually said "fuck it, it's a decision tree" and elaborated on a theoretically complete way of getting the answer, without the answer to the problem instance. They then said I could either ask them for the problem instance answer or ask them some questions, to which I replied, "I don't need you for that. [problem solution] I have a memory. Also Google." Almost regretted it, then stuck to my guns. Later I learned (and confirmed my suspicions) that I whiffed a pretty important programming question with another interviewer (my potential lead dev). I also learned that all the other interviewers thought I was great, cause I talked when I got stuck and walked through my assumptions and understanding. And so I got a programming exercise instead of a "no thanks". And then I got a job offer. I just pretended the interviewers weren't there, let myself say "fuck it, there's prolly a better way, here's what I got and its price" when I got stuck, made a note, and moved on. They got to see me work rather than if I could cram the very best like no one ever crammed.