Because as you know your height is the same as the distance from fingertip to fingertip. And the distance between my fingertips is over nine miles.
And that means you have to be careful when using butcher knives.
But don't panic, it was only about mm lost. But that’s not to say i wasn't attached to that particular mm.
So before using any kind of cutting tool think of the worst case scenario and don't have your fingers there.