2. Extra Sensory Perception
Extra Sensory Perception, or ESP, is the ability to gather information without the use of the 5 senses (hence it is also sometimes called sixth sense). ESP is often tested with a deck of 25 cards called Zener cards. Familiar to most people, these cards comprise a deck of 5 patterns, a circle, a square, a triangle, a set of squiggly lines, and a plus. Two people participate; one views the cards one by one, and the other attempts to “see” the card with the power of the mind. Again, there is a 1 in five chance that you will guess the card correctly, so it is not a particularly useful method of proof. Of course your odds improve with every card produced if you are told whether your guess was correct, as you can use card counting. The cards are also used in tests of telepathy when the viewer does not just record the shape on the card for verification, but attempts to “transmit” the shape to the other person. On average, most people guess right about 20% of the time.