Bart Simon lists it among practices pretending to be science: "categories ... such as ... pseudoscience, amateur science, deviant or fraudulent science, bad science, junk science, and popular science ... pathological science, cargo-cult science, and voodoo science."[6] Examples of pathological science may include Martian canals, N-rays, polywater, and cold fusion. The theories and conclusions behind all of these examples are currently rejected or disregarded by the majority of scientists.