A story from the time recounts that Piero Soderino, the head of the powerful Florentine Republic, even told the famously irascible Michelangelo that David's nose was much too large. Michelangelo then hid some marble dust in his hand, climbed back up his ladder and pretended to do some more "chiseling" on the offending proboscis. While he did so, he let some marble dust fall from his hand. The pompous Soderino was foo…
Not a huge Steve Jobs fan, but I had a professor who had worked as a designer under Steve Jobs and tried something similar. Steve insisted that a new mouse needed to be just a fraction of a millimetre slimmer so a person's palm was lower and closer to the work surface. They figured he was being an unreasonable "delicate genius" and returned a few days later with the identical mouse and claimed they had reworked it to…
There is a tendency when one is running or developing a product to convince yourself that your efforts are producing a genuinely good product that your customers will like. Frequently that isn't true, and the product is rightly trashed by the outsiders. The thing is, the people on the inside would have trashed it too if they had not been insiders.
Jobs seems to have had the ability to resist this self-deception. He was ruthlessly honest about how good the things Apple was making actually were and not at all afraid to reject things because some aspect was poor.