This document discusses medical quackery and identifies quacks. It defines quackery as practicing medicine without scientific methods, which can harm sick people. Quacks sell unapproved remedies without proper training. Signs of quacks include not advertising, working from home, claiming secret formulas, and using the same treatment for all illnesses. The effects of quackery can be patients dying, illnesses prolonging, wasted money if health doesn't improve, and false hope. Usual victims seek help for serious conditions but fear doctors or surgery.