Michael de Podesta has been doing the math on "Grime Dice" -- six sided cubes whose sides average out to 3.5, but whose face values are all radically different:
The interesting thing about these is that the odds of one die beating another are simple to calculate, but shift radically once you start rolling dice in pairs. It's a beautiful piece of counterintuitive probability math:
The amazing property of these dice is discernible when you use them competitively – i.e. you roll one dice against another. If you roll each of them against a normal dice then as you might expect, each dice will win as often as it will lose. But if you roll them against each other something amazing happens.
- Dice A will systematically beat Dice B
- Dice B will systematically beat Dice C
- Dice C will systematically beat Dice A
So the fact that Dice A beats Dice B, and Dice B beats Dice C does not ensure that Dice A will beat Dice C. Wow!
And how about this: If you ‘double up’ and roll 2 Dice A‘s against 2 Dice B‘s – the odds change around and now the B‘s will beat the A‘s ! Is that really possible? Well yes, and just to convince myself I wrote a Spreadsheet (.xlsx file) and generated the tables at the bottom of the article. If you download it you can change the numbers to try out other combinations.
Amazing Dice: Rediscovering surprise
(via Hacker News)
Brett from Mozilla writes, “Codemoji, a game and learning tool that lets you encode secret messages in emoji and then send them to friends for deciphering.”
Mur Lafferty, an amazing author and podcaster, had her mainstream publishing debt in 2013 with the wonderful Shambling Guide to New York City, about a travel writer who gets tapped to write a guidebook for spooks, haints, vampires and werewolves.
Kyle writes, “The Volt is a fully open source, arduino-based, handmade analog clock that tells time with meters. Available in a DIY install kit, 2 pre-made models, and a mix & match hardware option. The clocks are but with solid black walnut and maple, with faceplates produced in brass, copper, and steel. Only on Kickstarter!”
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