<P> Occasionally the MythBusters will take the opportunity to test "mini myths" during the course of one of the episode's main myths, usually in the name of satisfying personal curiosity . These can either be planned in advance in order to take advantage of the testing location--for instance, in the "Peeing on the Third Rail" myth Adam got permission to find out if placing coins on a train track was sufficient to derail a train (he found that the test locomotive was not affected at all)--or can simply take place on the spur of the moment . </P> <P> There are some myths the MythBusters refuse to test . Paranormal concepts, such as aliens or ghosts, are not addressed because they cannot be tested by scientific methods, although one exception, pyramid power, prompted Adam to comment, "No more' oogie - boogie' myths, please" and state at a tour show in Indianapolis in 2012 that it was a mistake . The program generally avoids experiments harmful to live animals, though in one episode they bombarded cockroaches and other laboratory insects with lethal doses of radiation and the cast addressed this, saying that the insects were specifically bred for experiments and would have likely died anyway . However animal carcasses (including those of pigs and chickens) are often used, but the MythBusters have repeatedly emphasized that the animals have died of natural causes . </P> <P> The book MythBusters: The Explosive Truth Behind 30 of the Most Perplexing Urban Legends of All Time (ISBN 1 - 4169 - 0929 - X) also gives a list of a dozen myths that are unlikely to be explored (although four were eventually tested). Savage has commented that it is difficult to test myths that require them to disprove general claims because of the inherent difficulty in disproving a negative . As a result, when they do pursue such myths, they typically go about disproving specific methods that claim to achieve results . </P> <P> Additionally, certain myths are not tested due to various objections by Discovery Channel or their advertisers, most notably myths pertaining to radio - frequency identification (RFID) vulnerability . Through nine seasons, a total of 2,391 experiments were performed and 12 tons of explosives were used to test 769 myths . The team has also expressed reluctance to test conspiracy theory myths such as the JFK assassination or 9 / 11 conspiracies, although they have tested some of the conspiracy theories relating to the Apollo Moon landings . </P>

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