| 1. | | Father builds exoskeleton to help wheelchair-bound son walk (reuters.com) |
| 687 points by geox on July 27, 2021 | 191 comments |
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| 2. | | Element raises $30M to boost Matrix (matrix.org) |
| 809 points by Sami_Lehtinen on July 27, 2021 | 339 comments |
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| 3. | | Postgres Full-Text Search: A search engine in a database (crunchydata.com) |
| 601 points by twakefield on July 27, 2021 | 137 comments |
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| 4. | | Naval Architecture (ciechanow.ski) |
| 717 points by todsacerdoti on July 27, 2021 | 138 comments |
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| 5. | | Columbo: an origin story (2018) (columbophile.com) |
| 168 points by MaysonL on July 27, 2021 | 93 comments |
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| 6. | | Mammals dream about the world they are about to experience before they are born (yale.edu) |
| 578 points by birriel on July 26, 2021 | 183 comments |
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| 7. | | Discord Launches Threads (discord.com) |
| 441 points by dchengy on July 27, 2021 | 225 comments |
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| 8. | | Google launches new vulnerability reward platform (googleblog.com) |
| 304 points by theafh on July 27, 2021 | 104 comments |
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| 9. | | Generally capable agents emerge from open-ended play (deepmind.com) |
| 277 points by Hell_World on July 27, 2021 | 51 comments |
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| 10. | | For developers, Safari is crap and outdated (perrysun.com) |
| 500 points by feross on July 27, 2021 | 598 comments |
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| 11. | | Peter the Great’s Beard Tax (jstor.org) |
| 108 points by lermontov on July 26, 2021 | 131 comments |
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| 12. | | Autofill in password managers can allow login credentials to be stolen (marektoth.com) |
| 226 points by shacrw on July 26, 2021 | 142 comments |
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| 13. | | In defense of hard counters in real time strategy games (waywardstrategy.com) |
| 158 points by aw1621107 on July 27, 2021 | 189 comments |
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| 14. | | Launch HN: Atmana (YC S21) – An app to help cut down on compulsive porn usage |
| 202 points by zero_billion on July 27, 2021 | 182 comments |
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| 15. | | FastAI.jl: FastAI for Julia (fast.ai) |
| 196 points by dklend122 on July 27, 2021 | 23 comments |
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| 16. | | Reconstructed path of Ingenuity flight 9 via photogrammetry (twitter.com/stim3on) |
| 96 points by _Microft on July 26, 2021 | 12 comments |
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| 17. | | Launch HN: Abbot (YC S21) – ChatOps as a Service, inspired by GitHub's Hubot |
| 143 points by icey on July 27, 2021 | 36 comments |
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| 18. | | Candide – Identify Plants with a Photo (candidegardening.com) |
| 187 points by sails on July 27, 2021 | 98 comments |
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| 19. | | We need to talk about testing (dannorth.net) |
| 126 points by glenjamin on July 27, 2021 | 72 comments |
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| 20. | | Capitol Hill's mystery soda machine (wikipedia.org) |
| 434 points by zdw on July 27, 2021 | 150 comments |
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| 21. | | Video game developers at Activision Blizzard say they'll walk out Wednesday (axios.com) |
| 495 points by waynekerr on July 27, 2021 | 528 comments |
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| 22. | | Functional Programming in OCaml (cornell.edu) |
| 176 points by noch on July 27, 2021 | 108 comments |
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| 23. | | Counterfactuals are not causality (michaelnygard.com) |
| 89 points by grzm on July 26, 2021 | 65 comments |
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| 24. | | Index machine: an open source pick and place machine (github.com/index-machines) |
| 91 points by gizdan on July 26, 2021 | 35 comments |
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| 25. | | Evolution of tree data structures for indexing (erthalion.info) |
| 101 points by baotiao on July 26, 2021 | 12 comments |
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| 26. | | Wildfires in Canada are creating their own weather systems, experts say (cbc.ca) |
| 143 points by colinprince on July 27, 2021 | 60 comments |
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| 27. | | Collision Detection Is Hard: The Story of Alf (nicole.express) |
| 160 points by zdw on July 27, 2021 | 30 comments |
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| 28. | | WeChat suspends new user registration for security compliance (reuters.com) |
| 187 points by dyslexit on July 27, 2021 | 182 comments |
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| 29. | | Lucasfilm hires YouTuber who specializes in deepfaking big-budget movies (theverge.com) |
| 333 points by thunderbong on July 27, 2021 | 213 comments |
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| 30. | | Fractons, the ‘weirdest’ matter, could yield quantum clues (quantamagazine.org) |
| 85 points by jnord on July 27, 2021 | 28 comments |
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