Subliminal Messaging

So this is a kinda random topic but I wanna talk about subliminal messaging for a bit. I was watching TV the other day and during the show i was watching a quick message popped up and said "Rockband 2 in stores tomorrow!" and i was really surprised. I don't think that was the mistake of the broadcast station.  I looked into it and found that subliminal messaging originated in 1898 by a psychologist named Knight Dunlap and he found that it could be used in advertising. Fifty years later a market researcher tested subliminal messaging in his theatre to advertise popcorn and pop. He used a tachistoscope which is a machine that flashes pictures at very fast speeds to show his messages which included "drink Coca-Cola" and "Hungry? Eat popcorn". After the test he found that popcorn sales went up 57%.