But they say at Zapatopi that aluminium works best.

The Aluminum/Tin Debate

In general, when people say "tin foil" they really mean aluminum foil. But what about tin (Sn)? Does it have the same anti-psychotronic properties as aluminum? Most experts agree that tin does have an effect but opinions are divided as to whether or not it is as good as aluminum. A small, but vocal, contingent even argues that tin is superior, but they are held by most to be the lunatic fringe of Foil Deflector Beanie science. I would advise people wishing to build a Deflector Beanie to stick with aluminum whenever possible since it is a proven technology.

"I have used the AFDB for the past 6 months and not only have I prevented Government Space Robots from reading my mind, but have lost 2 pounds of ugly fat and 2 inches from my head! Thank You for making me a happier person!

PS. I have also made a dress from colored foil that has prevented further loss of vital engergies to Government Space Robots!"

- Arlene Crump, Dallas, Texas