Numberphile 15-minute video on Dehn invariants: https://www.youtube.com/watch?v=eYfpSAxGakI
The Dehn invariant is a value derived from a polyhedron that doesn't change if you cut up the polyhedron into smaller polyhedral pieces and rearrange them into a different polyhedron. It's 0 for the cube and nonzero for other Platonic solids, proving that they can't be cut and rearranged into a cube. See https://en.wikipedia.org/wiki/Dehn_invariant for more, in somewhat more technical detail than the video.
surveillance capitalism, homophobia mention
this shit is bad enough for your average kid, but obviously disproportionately impacts vulnerable youth. hey maybe the reason why your kid is trying to put up a privacy barrier is because they're fucking queer and you're homophobic DEBORAH
Congress wants Google and Facebook to tell users exactly how much their personal data is worth. "Whatever the exact value that gets assigned to our attention... a little more transparency will remind us that "free" isn't free," via @wired. https://www.wired.com/story/senators-want-facebook-price-data-possible/
I'm extremely pleased to launch Run Your Own Social: How to run a small social network site for you friends.
This is a guide book to running a small, tight-knit federated social network server. It comes from my year of experience running Friend Camp. It's focused largely on SOCIAL solutions, though it does touch on the technical.
I've tried to keep it technology-neutral, and it should be a pretty easy read for anyone who's been on the fediverse for a while.
I remember seeing a #Vim command or script somewhere that would go through the open buffer and show which highlighting rules were being applied to what text, which was really helpful for debugging syntax files and stuff, but I can't find it. Anyone happen to remember where it was or what it was called?
The social network of the future: No ads, no corporate surveillance, ethical design, and decentralization! Own your data with Mastodon!