I was on board until "Use only plain ASCII text"

Not all languages lend themselves to the ASCII character set.

and

"If you are unable to distill the concepts or thoughts into language, then you have likely not fully understood the problem."

Oh, that must be why IC datasheets have those pesky timing diagrams and pinouts, the designers didn't fully understand the problem.

It is strange to see the author put so much weight on readability and comprehension in one paragraph, and then a few later, suggest that we chose deliberately NOT to use the right symbols (letters, mathematical notation, etc) and NOT to images to explain things that lend themselves to images.