One of my first assignments as a trainee in an auto-body shop was a car needing a new fender and some door repairs.

I spent hours doing a perfect job, but when the owner came to pick it up, he wasn't pleased.

"What's wrong?" I asked.

Pointing to the side of the car, he complained about the paint not matching, uneven gaps between panels, and a host of other problems. He demanded an explanation.

"The repairs were to the other side," I noted.