Paul Graham on Twitter: "TIL three golden rectangles make the vertices of an icosahedron. I'm going to make one of these and blow my kids' minds.… https://t.co/xY2TWSEScQ"

Country	Code	For customers of
United States	40404	(any)
Canada	21212	(any)
United Kingdom	86444	Vodafone, Orange, 3, O2
Brazil	40404	Nextel, TIM
Haiti	40404	Digicel, Voila
Ireland	51210	Vodafone, O2
India	53000	Bharti Airtel, Videocon, Reliance
Indonesia	89887	AXIS, 3, Telkomsel, Indosat, XL Axiata
Italy	4880804	Wind
3424486444	Vodafone
» See SMS short codes for other countries

1. Dustin Walper‏ @dwalper 10 Jan 2019
  Replying to @paulg
  
  The golden rule: do unto others as you would have them do unto your icosahedron.
  
  8 likes
  Thanks. Twitter will use this to make your timeline better. Undo
  
  Undo
1. K‏ @rehack20 10 Jan 2019
  Replying to @paulg
  
  Nice...and there is an element of induction, in there as well. The two intersection planes, by itself give 2 sets of triangles. From both sides. The moment you add the 3rd plane, it *has* to look the same from all sides.
  
  2 likes
  Thanks. Twitter will use this to make your timeline better. Undo
  
  Undo
1. Manuel Hernandez ‏ @manuelhe 10 Jan 2019
  Replying to @paulg
  
  For some reason this makes me curious about a 3D rendering of The Phantom Tollbooth
  Thanks. Twitter will use this to make your timeline better. Undo
  
  Undo
1. خفاجى عامر‏ @PE7GxImdwY2a53U 10 Jan 2019
  Replying to @paulg
  
  رائع
  Thanks. Twitter will use this to make your timeline better. Undo
  
  Undo
1. ‏ @itsN1X 10 Jan 2019
  Replying to @paulg
  
  Where did you find this
  Thanks. Twitter will use this to make your timeline better. Undo
  
  Undo
1. AsWeThink‏ @aswethink_io 10 Jan 2019
  Replying to @paulg
  
  Icosahedra / Icosahedrons keep reminding us of the universal connectedness of the information, differently put by @TheTedNelson: Everything is deeply intertwingled. #GeometricWisdom #DymaxionMappic.twitter.com/8yKAGy5pyy
  
  1 like
  Thanks. Twitter will use this to make your timeline better. Undo
  
  Undo
1. Paul Davis‏ @pd_classic 10 Jan 2019
  Replying to @paulg
  
  Where did you find this? Is there more there?
  Thanks. Twitter will use this to make your timeline better. Undo
  
  Undo
1. Ohm’sBrah‏ @BustaGusta 10 Jan 2019
  Replying to @paulg
  
  Somebody has been watching bucky boy!!
  Thanks. Twitter will use this to make your timeline better. Undo
  
  Undo
1. robert king‏ @robertkingNZ 10 Jan 2019
  Replying to @paulg
  
  @paulg you could tell them about prince ruperts cube shadow theorem https://en.wikipedia.org/wiki/Prince_Rupert%27s_cube … The area of a unit cubes shadow is equal to the vertical height difference of the points. What's cool is that you can cut a hole out of a cube and pass a large cube through it..
  Thanks. Twitter will use this to make your timeline better. Undo
  
  Undo
1. Geoff Pack‏ @virtualgeoff 10 Jan 2019
  Replying to @paulg
  
  Even better: if you replace the long edges of the rectangles with struts (ignore short edges), you get a tensegrity structure!
  
  3 likes
  Thanks. Twitter will use this to make your timeline better. Undo
  
  Undo