they use subliminal messages on tv.

"dr wilson bryan key revealed the existence of the tachistoscope, a fiml projector with a high speed shutter which flashes messages every 5 seconds for 1/300th of a second. the messages could not be seen by the naked eye, but were absorbed by the subconscious. the message would then filter down from the subconscious to the conscious level as thought, desire, or opinion, which the person believes is their own. years ago, a flash-frame picture of a coca-cola bottle used to be inserted into a cinema film just before the interval. the audience couldnt see it, but their subconscious could. sales of coca-cola during cinema intervals went up significantly."