[seanmcdirmid]

I will always remember what Bret Victor said about these kinds of projects in his Learnable Programming essay:

> As you can see, live coding, on its own, is almost worthless. The programmer still must type at least a full line of code before seeing any effect. This means that she must already understand what line of code she needs to write. The programmer is still doing the creative work entirely in her head -- imagining the next addition to the program and then translating it into code.

(To be fair to yaxu, its not live coding that he is talking about, but the feature of live update in isolation.)