The example in 1.13 probably would work better if the example with scalar instructions actually had, you know, more instructions than the one with the vector instructions. Otherwise, it's very taxing to read things like "static instruction count and dynamic instruction count both drop dramatically" when your eyes tell you that no, the static instruction count has actually increased.

Also, where does that 38-byte stride even comes from? That number is not even divisible by 4, nevermind by 8!