I think the commenter may have referred to the video, in which there's a lot of stutter. I found this distracting as well, since it made it difficult to see jus

I think the commenter may have referred to the video, in which there's a lot of stutter. I found this distracting as well, since it made it difficult to see just how interactive (or immediate, for the semantically inclined) the programming really was. That said, I think this is great work, and the screencast is otherwise doing a great job getting your points across. I disagree with other comments saying there's too much coding, and copy/pasta would've been better; I feel the balance was just right. Thanks for sharing this with the world!