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Cool, I wasn't aware of that book but I'll look into it!

Other resources folks might want to check out are:

+ David Harel's original paper on the statecharts formalism (which Sketch.systems implements): http://www.inf.ed.ac.uk/teaching/courses/seoc/2005_2006/reso...

+ Ian Horrock's "Constructing the User Interface with Statecharts" book: https://amzn.to/2sT1e4x

It's also worth noting that Sketch.systems doesn't do any kind of formal analysis or checking of invariants. If you're interested in that sort of thing, look into TLA+ (video intro: https://lamport.azurewebsites.net/video/videos.html) or Alloy (http://alloytools.org/).

> Sketch.systems implements the statecharts formalism

!? Do you know the phrase "bury the lede" (sic)!? ;-)

This is cool, this is something.

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