Why Don't We Just Amputate His Hand For Him?

I subscribe to a parenting newsletter where you enter the ages of your kids and they send you helpful tips. It just featured some suggestions for letting toddlers help in the kitchen.

"Give your toddler a butter knife and a cutting board on the floor and he can cut up a potato."

First of all, I can't cut up a potato with a butter knife. Second, ARE YOU PEOPLE CRAZY????