magician

The Cafe Wall Illusion 7/52

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The café wall illusion is a geometrical-optical illusion in which the parallel straight dividing lines between staggered rows with alternating black and white "bricks" appear to be sloped.

It was first described under the name Kindergarten illusion in 1898,[1] and re-discovered in 1973 by Richard Gregory.[2] According to Gregory, this effect was observed by a member of his laboratory, Steve Simpson, in the tiles of the wall of a café at the bottom of St Michael's Hill, Bristol. It is a variant of the shifted-chessboard illusion originated by Hugo Münsterberg.[3]

The precise cause of the illusion is not well understood, although it appears to involve interactions between the neurons in the visual cortex which code for orientation. It is unclear whether some inhibitory mechanism is at play, or if there is a kind of computational filter acting on input from cells operating at different spatial frequencies, i.e. taking their inputs from larger or smaller areas of the visual field (Takeuchi 2005).

Philosophers have also been interested in what illusions like this illusion can tell us about the nature of experience. For example, in the case of experiencing the Café Wall Illusion, it would seem to be that the one can know that the lines are parallel whilst at the same time one experiences them as unparallel. If so, then this might count against the claim the perceptual states are belief-like, because if perceptual states were belief like then, when experiencing the Café Wall Illusion one would simultaneously believe that the lines were, and were not, parallel. This would seem to entail that one was being irrational, because one would simultaneously be holding contradictory beliefs. But it seems highly implausible that one is being irrational when under going this illusion. For discussion of this general point about whether perceptions are like beliefs, see Crane & French (2016).

 
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What is a Psychological Illusionist?

Are you looking for a Psychological Illusionist, or wondering what exactly a Psychological Magician is?

Whereas a traditional magician is able to utilise sleight of hand to perform wonderful tricks, a Psychological Illusionist is someone who can utilise a variety of psychological skills to get inside your head and create the illusion of mind reading.

Illusions of the mind include entertaining presentations of telepathy; the supposed communication of thoughts or ideas by means other than the known senses, predicting the choices of others, duplicating unseen drawings, putting a thought into someone’s mind and many more exciting demonstrations.

Psychological magic is a powerful and unique form of entertainment that is ideal for corporate and private events. When your guests witness a psychological magician or mind reader you may be convinced that what you have just seen may just be real.

What can a Psychological Magician do for your event?

Your guests and clients will be mesmerised by the psychological skills on show as Dean reads their minds and predicts their actions. Dean can offer a wide range of performance options that can be tailored to fit with your requirements. Contact Dean today to find out what he can do for you.

Why Book A Close Up Mind Reader?

Here are just a few good reasons why:

  • Unique, close up, personal entertainment
  • Stimulating conversation between strangers
  • Creating a memorable and lasting experience
  • Entertainment that your guests have unlikely experienced before
  • No necessary set-up, lighting, staging or special requirements