Five Year Old Refutes Plato

Plato famously held that no one intentionally and knowingly acts wrongly. People do act wrongly, Plato knew, but such acts were always the result of ignorance of the good. If people knew what was good, they would act rightly. For Plato, there was no such thing as akrasia.

#1 is five years old. Like all five year olds, he is perfectly behaved... for a few minutes each day. After one bout of misbehavior involving pushing his younger brother we had a little chat.

PD: "Now was that the right thing to do?"
#1: "No."
PD: "Do you know what the right thing to do was?"
#1: "Yes I know. Not push him."
PD: "That's right. So if you knew what was the right thing to do, why did you push your brother?"
#1: Because I wanted to.

I suspect the Platonists are not convinced.