I added a link to a picture at least! I was going to put more images in there initially, but decided that I didn't want to risk disrupting the flow of the writi

I added a link to a picture at least! I was going to put more images in there initially, but decided that I didn't want to risk disrupting the flow of the writing, especially for things that I could explain reasonably well using only words. The best images for understanding are sometimes the ones that you form in your own mind as you read!