Personally I think it's an awful diagram, it'll either confuse or mislead the vast majority of people who see it. The "best" is a personal opinion, but I think

Personally I think it's an awful diagram, it'll either confuse or mislead the vast majority of people who see it. The "best" is a personal opinion, but I think the best diagrams are ones that make something that's hard to express in words easy to comprehend. This one fails massively at that, which is a shame in an otherwise excellent article.