In the short video clip hopefully embedded above, one Lori Harfenist wears her version of the tinfoil hat. The tinfoil hat is worn by some persons who believe it shields the brain from threats such as electromagnetic fields, mind control, and mind reading. The concept of a tin foil hat for protection against interference of the mind was mentioned in a science fiction short story by Julian Huxley, “The Tissue-Culture King”, first published in 1927, in which the protagonist discovers that “caps of metal foil” can block the effects of telepathy. 
The cap worn by Harfenist has the tinfoil surrounding the bill of her cap, and not protecting her skull. “Surely this cannot be correct,” I surmised. “It is the skull which must be shielded.” My own preference has been a tinfoil hat which surrounds the skull, as seen in the image below.
But maybe having the tinfoil on the bill of the cap, such as favored by Harfenist, would serve to deflect incoming radio waves away from the skull, and the style favored by myself would ironically amplify the radio waves. Pondering this, I re-discovered a news item from a few years ago. In 2005, a group of MIT students had tested the effectiveness of foil helmets at blocking various radio frequencies. To their surprise, it was found that their three models – dubbed the Classical, the Fez, and the Centurion – amplified certain frequencies! In the 2.6 Ghz and 1.2 Ghz bands a tinfoil hat of the type favored by me was not protecting against certain frequencies of radio waves but increasing the strength of the signal! 
As to whether the Harfenist style, wearing the tinfoil on the bill of the cap, is better at protecting against incoming radio waves, the MIT students did not do a test on that. So possible benefits of the Harfenist style seem to be unknown at this time.
The Julian Huxley who wrote the 1927 short story “The Tissue-Culture King”, in which “caps of metal foil” block the effects of telepathy, was the brother of Aldous Huxley. Aldous Huxley was the author of Brave New World, a novel which anticipated, among other things, developments in “psychological manipulation and classical conditioning.”  As for Julian Huxley, he was a British evolutionary biologist, eugenicist, and internationalist. Julian was knighted in 1958, whereby he became a “Sir” and joined the ranks of the British fancy lads. 
Around 1965, José Delgado of Yale University’s School of Medicine faced a charging bull. A radio chip had been implanted in the brain of this charging bull and Delgado used a “stimoceiver” which sent a radio signal and stopped the furious bull as it rushed at the scientist. Delgado also experimented with “wired-up” monkeys and cats. 
In 1967, Robert Naesland says an “object” was forcibly implanted into his skull. Allegedly the Swedish Security Police (SÄPO) were experimenting with a “technique to enable them to control human thoughts and behavior.” The implanted “object” was, Naesland claimed, “a radio-transmitter which has been transmitting a high frequency electromagnetic beam through my brain 24 hours a day ever since.” 
The technique used on Naesland is often called “Radio-Hypnotic Intracerebral Control”, abbreviated as RHIC. RHIC combines hypnosis and radio waves. An individual is placed under hypnosis and is programmed to perform certain actions upon radio signal. “The signal is practiced while he is under hypnosis to ‘teach’ him how to respond.” 
Currently it is conceivable that the signal is sent out via television broadcasts and activates, via implant, pre-programmed behaviors in certain individuals.
The 2.6 Ghz radio band signal found by the MIT students to be amplified by tinfoil hats is allocated for mobile communications and broadcast satellites.  “Mobile communications” would include the ubiquitous cell phones. In Cell, a novel by Stephen King, a mysterious signal broadcast over the global cell phone network turns the majority of people into mindless vicious animals. 
In a recent video clip, “US Criminal Government: Paul Joseph Watson Accessing the ICBI-Bilderberg Austrian Lair”, Watson analyzes clues derived from the list of attendees at the Bilderberg meeting now underway in Austria. “Artificial intelligence will be part of the core discussion topics at Bilderberg 2015,” Watson surmises. Regina Dugan, an executive at Google, is one of the newbies at Bilderberg this year. She, says Watson, is “a pioneer of ingestible ID microchips.” Before joining Google in 2012, Dugan was Director of the Defense Advanced Research Projects Agency (DARPA).  The plan, reports Watson, is to “grease the skids” for widespread acceptance of the ingestible ID microchips. When the time comes, the public will even be eager to embrace the new technology, as they did with cell phones. But what is called ingestible “ID” microchips may have another purpose: Implantation of RHIC devices. (Background: Moon In Aries Augments Bilderberg, Ersjdamoo’s Blog, June 10, 2015.)
The DARPA/Google/Bilderberg presumed discussion of implementation of ingestible ID microchips may be a situation you believe that you, an intelligent person, would never succumb to. And yet you have already been conditioned to laugh at persons wearing tinfoil hats, haven’t you? And how are you liking your ubiquitous cell phone?
——- Sources ——-
 “Tin foil hat”, Wikipedia, June 14, 2015. https://en.wikipedia.org/wiki/Tin_foil_hat
 “Tin Foil Hats Actually Make it Easier for the Government to Track Your Thoughts”, by Matt Soniak. The Atlantic (online), Sept. 28, 2012. http://tinyurl.com/9xbdaz8
 “Brave New World”, Wikipedia, June 14, 2015.
 “Julian Huxley”, Wikipedia, June 14, 2015.
 Mind Control, Oswald and JFK, by Lincoln Lawrence and Kenn Thomas. Kempton, IL: Adventures Unlimited Press, 1997.
 “A Brain Implant Victim Speaks Out”, by Robert Naesland. Extracted from Paranoia Magazine, Issue 19 – Winter 1999. http://www.bibliotecapleyades.net/sociopolitica/esp_sociopol_mindcon29.htm
 “Cell (novel)”, Wikipedia, June 14, 2015.
 “Regina E. Dugan”, Wikipedia, June 14, 2015.