Mirrors

The moon actually has mirrors on it. They were left there by astronauts who wanted to bounce laser beams off them, so that the distance to the moon can be measured.

Sony

In 1998, Sony accidentally sold 700,000 camcorders that had the capabilities to see through people’s clothing.

5

If you take any number, double it, add 10, divide by 2, and subtract your original number, the answer will always be 5.