Ren is your four years old child.

While you're cleaning the house,Ren is playing outside. He is looking at the remote control car your neighbor's son was playing with. He seems amazed at it,so when the car moves to him,he touched the car,with just one finger.And then your neighbor's son yelled.

"Don't touch it,it'll be damaged!" Said your neighbor's child.

And then Ren just pulled his hand back,continue looking at the remote control car as it moves.