[knarf]

I worked with a guy many years ago that had patented a fire escape system using lasers and small mirrors that would be mounted at corners, low to the floor that would guide people out of a burning house.

I thought it was a simple and brilliant idea.

[NavVet]

A use of mirrors as a cheap / effective way to guide people out of a burning building is one thing. Ringing the planet with giant space mirrors to combat a problem that doesn’t exist at the cost of trillions and trillions of dollars, is quite another.