[logicallee]

>Blogspam

This is not an accurate characterization and you should be downvoted for it. The article (which links to your source) is great. It's also more approachable than your link, which I wouldn't have read through. (in fact, I did just read through it just now and found it a chore.)

your link also shouts out to our (great) link at the bottom, and calls it "far less circumlocutory". why do we have to read a less approachable source, when we can read a great blog post about it? especially when the link is included for anyone who wants to dive deeper.

secondary sources that explain a subject are good.