[stavros]

I agree with you, I immediately understood what they are, but what's the problem with more clarification? I've upvoted you.

[pdpi]

Offering clarification is good, shitting on the article is bad.

The article does, in fact, do a perfectly fine job of explaining what a swift brick is. GP could easily have said “I couldn’t quite picture what a swift brick is”, but instead said “article did a poor job explaining swift bricks”, and that’s what they’re getting criticised for.