Because it wouldn't commute!
Decaffeinated coffee.
It has huge balls on it. Credit goes to the 70 year old man who just came into my work and made my day.
Do you ladies wanna go back to my place and conduct a double slit experiment?"
When they find the position, they can't find the momentum. When they find the momentum, they can't find the position.
Because cross products don't commute!
Because they won't commute.