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Skew Dice

Posted: February 26th, 2019, 7:56 pm
by Peter Ross
Anyone use these as part of a magic trick?

https://www.youtube.com/watch?v=OI5njPo7zC0

Re: Skew Dice

Posted: February 26th, 2019, 8:52 pm
by brianarudolph
The only time I have ever used them for magic is to transform normal dice into them.

Because they are not cubes like regular dice, there's no way I can use them for rolling numbers without arousing tremendous suspicion on the part of the spectators - even though they are actually 100% fair.

Re: Skew Dice

Posted: February 26th, 2019, 11:56 pm
by Bill Duncan
If they ain't square, they ain't fair. See Persi's video on YouTube (2 parts)
Part 1 is here.
https://youtu.be/G7zT9MljJ3Y

Re: Skew Dice

Posted: February 27th, 2019, 8:12 am
by Peter Ross
I was thinking of a bit of business involving a pair of glasses that seem to change the appearance of the dice - that sort of thing.

Re: Skew Dice

Posted: February 27th, 2019, 11:58 am
by brianarudolph
Bill Duncan wrote:If they ain't square, they ain't fair. See Persi's video on YouTube (2 parts)
Part 1 is here.
https://youtu.be/G7zT9MljJ3Y


Thanks for that, Bill. Very interesting!

As Professor Diaconis points out in that video, they identified 30 classes/families of fair dice.
The skew dice are in the family of fair dice shown in the 3rd row, second from the right, in the graphic displayed at 7:23 in the video.