Only by the end of the third paragraph does it even become apparent that Wasabi is a programming language.
If this is the book that FogCreek gave to new developers, those developers would have been told "Wasabi's our internal dialect of BASIC; and we added functional programming language features to it."
I'd never heard of it until this post. And I'm no noob (read: I am old).
Is Wasabi available for people to play with? Maybe open sourcing it would save it, if only as an academic or historical curiosity.
You have to try pretty hard: the compiler and runtime are available in closed-source form for FogBugz For Your Server installations, in the Accessories directory.
I'm also planning on open sourcing the new Roslyn-based code generator. I don't currently have any plans to open-source the rest of it.
In the original blogpost, they (FogCreek) say they're going to go over and open source at least some of it in a follow-up post.