Although it has been attempted to overturn the ruling in the Helling case, I would suppose that these attempts have been unsuccessful because the ruling was in favor of a higher standard of care than what was deemed appropriate by for the ophthalmologists. One might argue that the ruling has remained in place because holding the defendants liable was, in a way, a step towards checking the medical profession’s privilege to set it’s own standards. I feel as though legislature has probably not seen fit to reinforce it because the original ruling remains valid in that a doctor can follow all of the standards of care, and still be liable.
Statistics and probability are important in narrowing the source. Investigators identify and compare fibers physically, using microscopy, as well as chemically. Like hair, textile fibers are among the most common items left at a crime scene.
