Woops!
I apologize, I wasn't poking fun at you. As a matter of fact, I wasn't aware of your hypothesis, at all. I am aware of the material which looks a bit like earthworm tailings, but didn't know there was any thought about them being like stems.
Sorry for any offense, it was really completely inadvertent. I have absolutely no idea what I'm talking about in these matters.
And some others, too, but that's another story.
Arf
