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Author Topic: 100 Prisoners, 1 light-bulb puzzle  (Read 1764 times)
nimda (OP)
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June 10, 2012, 02:44:48 AM
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So I found this on the XKCD forums, and I just had to share it with you guys Smiley
It's a classic puzzle with a nice, formal proof of solution.
Near the end, there's a solution for sending arbitrary messages to all prisoners, using only 1 light-bulb; it's P2P-ish.
http://www.segerman.org/prisoners.pdf
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Each block is stacked on top of the previous one. Adding another block to the top makes all lower blocks more difficult to remove: there is more "weight" above each block. A transaction in a block 6 blocks deep (6 confirmations) will be very difficult to remove.
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John (John K.)
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June 10, 2012, 02:47:23 AM
 #2

So I found this on the XKCD forums, and I just had to share it with you guys Smiley
It's a classic puzzle with a nice, formal proof of solution.
Near the end, there's a solution for sending arbitrary messages to all prisoners, using only 1 light-bulb; it's P2P-ish.
http://www.segerman.org/prisoners.pdf

Extremely interesting, thanks!  Cheesy
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June 10, 2012, 03:00:39 AM
 #3

 Grin
I like the Uber-Uber-Theorem and "delight(bulb)"

Apparently this paper earned someone a nice low Godel # Tongue

Edit: did you notice the Pyramid scheme in there? Cheesy
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June 10, 2012, 04:08:51 PM
 #4

So I found this on the XKCD forums, and I just had to share it with you guys Smiley
It's a classic puzzle with a nice, formal proof of solution.
Near the end, there's a solution for sending arbitrary messages to all prisoners, using only 1 light-bulb; it's P2P-ish.
http://www.segerman.org/prisoners.pdf

WoW! That's the type of puzzle I used to play with when I was a kid. Sadly, not any more, with the exception of donning a tinfoil hat every now and then when it comes to Bitcoin.

~Bruno~
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June 10, 2012, 06:13:45 PM
 #5

So I found this on the XKCD forums, and I just had to share it with you guys Smiley
It's a classic puzzle with a nice, formal proof of solution.
Near the end, there's a solution for sending arbitrary messages to all prisoners, using only 1 light-bulb; it's P2P-ish.
http://www.segerman.org/prisoners.pdf

Thanks to this post, I firmly believe I've found our beloved Satoshi Nakamoto. Please watch and see if you concur. http://www.youtube.com/watch?v=7wbnjdGvrDQ

~Cackling Bear~
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