| 1. | | Ruby is too slow for programming competitions (clifreeder.com) |
| 274 points by ClifReeder on April 21, 2013 | 236 comments |
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| 2. | | Cognitive Overhead, Or Why Your Product Isn’t As Simple As You Think (techcrunch.com) |
| 240 points by pg on April 21, 2013 | 73 comments |
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| 3. | | The Last Question (case.edu) |
| 219 points by wskinner on April 21, 2013 | 63 comments |
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| 4. | | What's Tylenol Doing to Our Minds? (theatlantic.com) |
| 218 points by BruceM on April 21, 2013 | 148 comments |
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| 5. | | Writing device drivers in Linux: A brief tutorial (2006) (freesoftwaremagazine.com) |
| 186 points by seangarita on April 21, 2013 | 33 comments |
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| 6. | | The Clown Car Technique for Responsive Images (github.com/estelle) |
| 181 points by joshuacc on April 21, 2013 | 32 comments |
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| 7. | | Show HN: jsdares – learning programming visually (jsdares.com) |
| 177 points by janpaul123 on April 21, 2013 | 39 comments |
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| 8. | | In India, 'no frills' hospitals offer $800 heart surgery (globalpost.com) |
| 171 points by OGinparadise on April 21, 2013 | 108 comments |
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| 9. | | Diving into AngularJS (floatleft.com) |
| 167 points by appleton on April 21, 2013 | 46 comments |
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| 10. | | A Primer on IPv4, IPv6 and Transition (potaroo.net) |
| 134 points by p1mrx on April 21, 2013 | 123 comments |
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| 11. | | Open Sans, how do we love thee? (blog.wordpress.com) |
| 132 points by neeee on April 21, 2013 | 75 comments |
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| 12. | | Factor 0.96 now available – over 1,100 commits (re-factor.blogspot.com) |
| 129 points by mrjbq7 on April 21, 2013 | 64 comments |
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| 13. | | The other side of "academic freedom" (matt-welsh.blogspot.com) |
| 124 points by phenylene on April 21, 2013 | 56 comments |
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| 14. | | Beautiful Pacific Crest Trail Journals (thehikeguy.com) |
| 124 points by bigalo93 on April 21, 2013 | 24 comments |
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| 15. | | Brian Kernighan's Advanced Programming Techniques Class at Princeton (princeton.edu) |
| 121 points by jenningsjason on April 21, 2013 | 38 comments |
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| 16. | | The Deadly Corruption of Clinical Trials (motherjones.com) |
| 111 points by kumarski on April 21, 2013 | 59 comments |
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| 17. | | What Makes Rain Smell So Good? (smithsonianmag.com) |
| 107 points by bigalo93 on April 21, 2013 | 23 comments |
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| 18. | | ‘Human computer’ Shakuntala Devi has died (thehindu.com) |
| 107 points by sindhiparsani on April 21, 2013 | 29 comments |
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| 19. | | Peter Molyneux may have just monetized trolling (gamasutra.com) |
| 104 points by laurent123456 on April 21, 2013 | 71 comments |
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| 20. | | Nikola Tesla’s Predictions for the 21st Century (smithsonianmag.com) |
| 106 points by imdhmd on April 21, 2013 | 32 comments |
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| 21. | | Facial Recognition Failed in Boston Bombing (ipvm.com) |
| 98 points by jhonovich on April 21, 2013 | 98 comments |
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| 22. | | B-Heap vs. Binary Heap (2010) (acm.org) |
| 99 points by boyd on April 21, 2013 | 20 comments |
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| 23. | | Ask HN: Suggestions for spacewalk procedure writing? |
| 96 points by jamesmontalvo3 on April 21, 2013 | 36 comments |
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| 24. | | Reverse Kickstarter – shows real sales stats (twolivesleft.com) |
| 91 points by mrcharles on April 21, 2013 | 34 comments |
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| 25. | | SSL And The Future Of Authenticity (thoughtcrime.org) |
| 90 points by gnosis on April 21, 2013 | 48 comments |
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| 26. | | The Matasano Crypto Challenges (matasano.com) |
| 87 points by greyman on April 21, 2013 | 34 comments |
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| 27. | | Programmer under oath admits computers rig elections (youtube.com) |
| 84 points by ConceitedCode on April 21, 2013 | 71 comments |
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| 28. | | Show HN: Tweetspiration – let Twitter brainstorm ideas for you (tweetspiration.com) |
| 82 points by jellyksong on April 21, 2013 | 36 comments |
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| 29. | | Programming is Like a Dream (independentdeveloper.com) |
| 78 points by JacksonGariety on April 21, 2013 | 12 comments |
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| 30. | | Show HN: Hosted IRC for Teams (my first startup) (teamrelaychat.nl) |
| 74 points by pepijndevos on April 21, 2013 | 69 comments |
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| More |
