I think we like things to be linear - I do this, this happens. With yeast it's like a spider's web - do this, it affects multiple processes.I actually have degrees in Biology** and Ecology. And those litter buggers also fascinate me. And I still do not understand those little buggers. Which is also fascinating.
I've noticed, even in very recent papers, they usually have the phrase "We still don't know why" somewhere. I think that's hoot!