There was a clockmaker’s guild. They were pretty good at making clocks. Then they got hired to make a sundial. Sure, they said, we can do that! It seemed pretty easy, sun, stone, etc. Also, they knew how to make clocks, right? They spent quite a while making sundial prototypes out of stone, cheese, jello, rubber cement, and papier-mâché. Boy, they sure spent a lot of time on that. Suddenly, they realized they were running out of time. So they threw together this thing made out of cardboard and sent it off, failing to take into account the Earth’s tilt and the changing of the seasons. Oops! The king was pretty peeved and had all their heads cut off.
Moral: A little humility never hurt anyone.