Ailen's Lacerations

Autopsy report said four lacerations on the back of the head, covering the obcipital protuberance and surrounding it. Blood pattern discipline is actually a very legitiate discipline to determine events that happened at the scene. But sometimes examiners start focusing in on minutia without looking at the big picture. And this is where heinrich yedo was probably over interpreting blood patterns at the crime scene. It's not a real science so you're totally saying it doesn't work when used correctly.