Cheers. I enjoyed this series as it talks about some things I like to think about it, sometimes in a different way, and also some interesting things I hadn't thought about too much.
But I'm just going to make an uninteresting terminology comment, regarding the term "brachiation". I think this is unsuitable for campusing. Brachiation makes me picture horizontal motion, generally moving the body forward, as you would on monkey bars. Campusing, even smoothly as shown in the article, the body swings side to side and the torso moves up against gravity. I think if you are going to call campusing "brachiation" it is something similar to calling jumping "running".
EDIT:
Having watched the Jan Hojer clip, I can see that this is closer to actual brachiation, since the torso actually swings underneath the hand. In the campus board clips, the torso or c.o.g. never crosses the horizontal position of either of the two pivot points, the two hands.
Post edited at 11:14