If your knife is sharp enough you will eventually cut the shit out of yourself because it slices so easily. You’re essentially waving around an 8 inch razor blade.

If your knife is dull enough you will eventually cut the shit out of yourself because it takes so much effort to cut that a slip becomes a stab. The amount of effort you have to put in to do basic stuff like cut carrots can be high enough that give up some control of the blade.

A knife at a good level of sharpness will cut with reasonable effort but not be a giant razor blade. I think for most people this is likely the safest level of sharpness.