Anyone that is familiar with manufacturing knows that as an operator meets his quota the extra parts go in a container and when they change to a different part the extras are set to the side and any parts from past runs of the new part is brought back to the floor. Lost a good job because of that one time. I was building differentials for lawn tractors and we had a model change. My good parts went against the wall and bad parts brought to the line that went into the transmissions which later came apart. I was on the line the day the transmission was built though I didn't build the failed part. That's when I found out my last name was Goat and my first was Scape.