Eli5, How do these work and how could you make stuff like this?

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I saw this:

[https://youtu.be/ikbEBp5BeCM] and several other videos that have a similar style, but exactly is it made. Is every possibility just accounted for, or is there a system, or a trick to it?

In: Mathematics

3 Answers

Anonymous 0 Comments

The basic idea is to give choice, and slowly eliminate that choice. Like, select one of three squares. Then move to right if you can, or to the left if you cannot. Now, you have squeezed original three choices down to two, either middle square or right-most square. Similarly you can slowly just squeeze the choice away until every choice has been forced to the same result.

What I like to do with these is pick two initial choices, and follow both. It’s fun seeing them being brought closer and closer together until at some point, both choices end on the same place, and the magician reveals their prediction.

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