minor nitpick: > "In case that description doesn’t make sense, here’s an exercise to help demosntrate the technique: <more text>" In cases where a descriptio

minor nitpick: > "In case that description doesn’t make sense, here’s an exercise to help demosntrate the technique: <more text>" In cases where a description doesn't make sense, a visual example might help tremendously. As soon as I saw <more text> I was disappointed. Pictures really are worth a thousand words. They're faster and more efficient, especially for examples that are already describing pictures!