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fermatslibrary's profile
Fermat's Library
Fermat's Library
Fermat's Library
@fermatslibrary

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Fermat's Library

@fermatslibrary

A platform for illuminating academic papers. We publish an annotated paper every week. Our chrome extension for arXiv: https://fermatslibrary.com/librarian 

fermatslibrary.com
Joined September 2015

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    1. Fermat's Library‏ @fermatslibrary 21 Apr 2018
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      In a 4-dial combination padlock what is the more secure option after locking?pic.twitter.com/XQwC1kaLIn

      24 replies 64 retweets 288 likes
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      Fermat's Library‏ @fermatslibrary 21 Apr 2018
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      Answer here and justify in the comments 😊

      4:25 AM - 21 Apr 2018
      • 8 Retweets
      • 98 Likes
      • Wanderer jordan B Paawan Adir Grant Bruno Volpato Juan Martinez Agustín Covarrubias Gaboc
      85 replies 8 retweets 98 likes
        1. New conversation
        2. Christopher Moore‏ @runmoore 21 Apr 2018
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          Replying to @fermatslibrary

          When randomly spinning the dials there’s a small chance you leave it on the combination, leaving it unlocked. This won’t happen with all 0’s

          3 replies 0 retweets 28 likes
        3.  🦎 Vin‏ @vileteen 21 Apr 2018
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          Replying to @runmoore @fermatslibrary

          But there is a small chance that your unlock combination is all zeros.

          3 replies 0 retweets 49 likes
        4. 1 more reply
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        2. Harald van Dijk‏ @haraldvdijk 21 Apr 2018
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          Replying to @fermatslibrary

          Assuming that the resulting combination does not unlock it (possible in both cases), neither option gives away any information. However, most people who will claim to randomly spin the dials, won't actually randomly spin the dials. In that case, they do give away info.

          1 reply 0 retweets 22 likes
        3. Mark V‏ @Apple__Thoughts 21 Apr 2018
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          Replying to @haraldvdijk @fermatslibrary

          Neither gives any info on a single observation, but maybe if adversary can observe your lock over extended period of time they learn more from seeing multiple scramblings than from always observing 0000?

          1 reply 0 retweets 18 likes
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        2. Tyler Vornberg‏ @tyler_vornberg 21 Apr 2018
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          Replying to @fermatslibrary

          It doesn’t matter what you do; 5 seconds with a bolt cutter is all you need.

          1 reply 0 retweets 14 likes
        3. Alex Gusev‏ @alxgsv 21 Apr 2018
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          Replying to @tyler_vornberg @fermatslibrary

          Mathematics meets physics :-) Game over :-)

          0 replies 1 retweet 11 likes
        4. End of conversation
        1. New conversation
        2. lucale‏ @lelucale 21 Apr 2018
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          Replying to @fermatslibrary

          I voted 0000: if you used random combination, after n-days anyone who read it would exclude those ones...

          1 reply 0 retweets 31 likes
        3. anxious loser  ✨‏ @startresse 21 Apr 2018
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          Replying to @lelucale @fermatslibrary

          it still would take 9999 days at least (if you don't use the same random comb twice) which is still 27 years

          1 reply 0 retweets 1 like
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        1. Michell‏ @MichellBasler 21 Apr 2018
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          Replying to @fermatslibrary

          voted before thinking. If you randomly spin, you have already told the other person some of the numbers that are NOT the combo. So maybe their chances of finding the real one are higher.

          0 replies 0 retweets 14 likes
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        1. Jørgen‏ @impwannabe 21 Apr 2018
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          Replying to @fermatslibrary

          Considering humans are really bad at doing stuff "randomly" I'd say zero it out. Erases all information about the previous state of the. If you in a hypothetical world can truly just mix a thing randomly they're equivalent.

          0 replies 0 retweets 11 likes
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