You most likely have done your home work, but did not taken it a step further as we did. Your entire argument is based on the fact that you viewed pictures that did not show parasites. Do you know what a fluke looks like? Most Doctors don't even know. Webster's dictionary states that a parasite is an organism that grows, feeds, and is sheltered on or in a different organism while contributing nothing to the survival of its host., think out side the box: not all parasites are squiggly , long , slimy things. Some parasites are intracellular: often times, parasites are not visible to the unaided eye, most require a microscope. We understand that most of what Dr. Clerk teaches, goes against mainstream medicine we -too- do our home work and have decided.