Because they won't commute.
They both worry about the position of colons.
Pilot: Well I'm 6 foot tall and I'm sitting front left.
Home on the Range'!
A home-cooked shower.
So he would stop getting lost everything he checked it.
When they find the position, they can't find the momentum. When they find the momentum, they can't find the position.
He was just minding his Ps and Qs.
Because cross products don't commute!