Why are burrs so malleable?

[Jan]

I've already written a few drafts on this subject, but it's very difficult to describe what I've learned. I think I need to draw a picture, then scan and post it along with the drafts.

Mr. Mark, please be so kind and prepare for us a simple drawing explaining your burr thoughts.

You know, as an alien I am sometimes misunderstanding an iota or a dot in your post and it may prevent me from clearly understanding the whole thing. Thank you.

Jan