Author here. The answer is because I mentioned it as one of the bullet pointed hard-rules, and I wanted to include an example to illustrate it.
Thanks for pointing this out, what a facepalm. I've fixed it in the post.
Author here. The answer is because I mentioned it as one of the bullet pointed hard-rules, and I wanted to include an example to illustrate it.
Thanks for pointing this out, what a facepalm. I've fixed it in the post.