Tin Foil Hats Actually Make it Easier for the Government to Track Your Thoughts
In 2005, a group of MIT students, ...tested the effectiveness of foil helmets at blocking various radio frequencies.
The helmets shielded their wearers from radio waves over most of the tested spectrum ...
but, surprisingly, amplified certain frequencies: those in the 2.6 Ghz ( allocated for mobile communications and broadcast satellites) and 1.2 Ghz (
allocated for aeronautical radionavigation and
space-to-Earth and space-to-space satellites)
bands.
... MIT guys' ... conclusion -- "the current helmet craze is likely to have been propagated by the Government, possibly with the involvement of the FCC" -- maybe goes a few steps too far, their study at least shows that foil helmets fail at, and even counteract, their intended purpose. That, or the students are aliens who fabricated these results in an effort to get you to take your perfectly functional helmet off.