important lesson

Here we are in the car, headed south for our brief Disney vacation. Dennis asked for his big car seat so he could sleep on the way, if that's an indication of how tired he is after today! He had his first computer class at school today, and I was happy to ask him what he'd learned. He said (and he sounded like he'd been programmed) "computers are important machines, not toys, no not toys, are machines, not toys". I had to smile, thinking that my own computer might be spared now. Anyone know how to get child finger grime off a laptop screen?