Orthographic Depth(en.wikipedia.org)
45 points by Petiver | 38 comments
First screen, captured .
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Cecilia Payne-Gaposchkin(en.wikipedia.org)
207 points by rmason | 69 comments
Fidonet Rules (2014)(wiki.c2.com)
76 points by kimi | 33 comments
The Doorman's Fallacy in action(rozumem.xyz)
199 points by rozumem | 255 comments
Related stories
Show HN: What if the speed of light was 5 km/h?(rivendell.dmitrybrant.com)
544 points by dmitrybrant | 236 comments
Interactive 3D browser simulation of a park where the speed of light is 5 km/h, showing length contraction, time dilation, Terrell rotation and Doppler effects.
Rule 30: one black cell(wolframcollatzmahler.com)
16 points by amichail | 5 comments
An interactive explainer of Wolfram's Rule 30 cellular automaton, its three open prize problems about the centre column, and observed order at the pattern's edges.
A walking tour of surveillance infrastructure in Seattle (2020)(coveillance.org)
388 points by eustoria | 265 comments
A Coveillance guide describing a walking tour of Seattle surveillance sites, including cameras, Amazon Go, license plate readers, a fusion center, and an AT&T NSA peering site.
San Francisco homelessness: Park ranger helps one person at a time(sfstandard.com)
345 points by NaOH | 539 comments
San Francisco Standard article about a Golden Gate Park ranger who works individually with unhoused people to connect them with help.
Show HN: SQL Noir – Learn SQL by solving crimes(sqlnoir.com)
380 points by chrisBHappy | 78 comments
SQL Noir is an open-source interactive detective game where players solve crime mysteries by writing real SQL queries.
How to talk to anyone and why you should(theguardian.com)
448 points by Looky1173 | 229 comments
A Guardian lifestyle article on why many people avoid speaking to strangers in public and how learning to do so benefits individuals and society.