Dec 22nd: Jeff & Sanjay recently published a bunch of performance hints, many (most? all?) of which are universally useful approaches for software engineering in general

Dec 22nd: Text editing is just much more complex than you might imagine.

Dec 9th: An interesting (hour long) video about the walk/pathing system from The Witness (and generally how difficult collision and pathing is in 3D games)

Devil Platforms

Level Devil a great little 'frustrating platformer'. I love this genre, mostly to watch, as playing is pretty frustrating [via Myles]

Nov 26th: It's not a long read, but How to not get away with murder is a fun read of extreme incompetence. I figure I would be a much better criminal

Unicode Binary Input Terminal

I love this project - a rack-mounted keyboard device that lets you input any Unicode codepoint (character) using toggle switches, complete with a visual preview. Works for Emoji too and looks beautiful.

Nov 7th: I don't think I'll ever actually get around to doing it, but I would love to set up an MILS-based Lego modular diorama.

Complex systems for complex systems

I've reads it a few times and it's fascinating - why flight booking is so complex, from one of the co-founders of the company that became Google Flights. Fare components, priceable units, open jaws, etc

Oct 5th: I keep meaning to try Directory Opus Pro, especially as Explorer gets progressively worse

Oct 5th: desmos is a really great web graphing calculator

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About

This is the personal website of Cal Henderson, Slack co-founder & CTO.

I give occasional talks, write code and sometimes articles.

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