Writing always takes longer than I expect. The issue wasn’t technical (it wasn’t too hard to take my examples from bl.ocks.org and embed them on a page). It jus

Writing always takes longer than I expect. The issue wasn’t technical (it wasn’t too hard to take my examples from bl.ocks.org and embed them on a page). It just required more thought to take my speaker notes and translate them into prose. You can get away with more hand-waving in speech than in writing. Also, there were a few things in my talk that I wanted to fix, like replacing the rainbow color scale with something more effective. The examples themselves I worked on intermittently, typically for an hour or two in the evenings. I got interested in mazes as an analogy for design process when I gave a talk at OpenVis earlier in the year.