Reflecting upon the little model tonight, it occurs to be that although I took significant efforts to simplify the model down the the smallest thing possible, it was still too big. Not the model itself, but the question. It is a probably good question, “How do endometrial cells survive and reproduce outside of the uterus?”, but where does it lead? What does it reveal? I don’t know. Perhaps a better question is how to predict endometriosis without surgery.