How Should you explain dynamic Programming to 4 year old?

writes down “1+1+1+1+1+1+1+1 =” on a sheet of paper
“What’s that equal to?”
counting “Eight!”
writes down another “1+” on the left
“What about that?”
quickly “Nine!”
“How’d you know it was nine so fast?”
“You just added one more”
“So you didn’t need to recount because you remembered there were eight! Dynamic Programming is just a fancy way to say ‘remembering stuff to save time later’“

~ Jonathan Paulson

Adios.