That doesn't answer the question. You could be out buying groceries, hear a good tune, and then pretend you invented it in steps when you get back to your studi

That doesn't answer the question. You could be out buying groceries, hear a good tune, and then pretend you invented it in steps when you get back to your studio. Just like we pretend we figured out the tortoise/hare algorithm for finding loops in linked lists at interviews.