What does this have to do with Stripe? They're pretty clear on this point: "Our questions seek to understand how people approach real world problems, rather than testing for esoteric skills you might demonstrate on a whiteboard."
I'm referring to the long interview process, where there are two phone interviews and a day-long in person interview. It sounds like Stripe are trying to break the cycle of irrelevant questions during interviews, but it doesn't change the fact that a day-long interview is exhausting.