Nothing is as easy as it looks. Murphy’s Law—anything that can go wrong, will go wrong—is alive and well in the information security world. Several bands are named after Murphy's Law, and it's also a popular name for Irish pubs and taverns around the world. Fluid-flow is governed by the Navier-Stokes equations, and of course everyone is familiar with Einstein’s energy to mass relation, E=mc2. Some people have really tried to do this, despite the odds. The law captures our imagination. If there is a possibility of several things going wrong, the one that will cause the most damage will be the one to go wrong. As the story goes, Murphy complained about one of the technicians serving under him on a project studying the effects of deceleration on people: “If there is any way to do it wrong, he’ll find it.”The “wrong” here referred to wiring a transducer on a rocket sled. Here are 10 variants. Murphy's Law and its offshoots have been collected in books and Web sites. Murphy’s Law uses a word that creates confusion: “Law”. Widely know laws such as the laws of electricity and magnetism, have Maxwell’s equations. Corollary: If there is a worse time for something to go wrong, it will happen then. Law of Probability - The probability of being watched is directly proportional to the stupidity of your act. Murphy's Law of the Open Road: When there is a very long road upon which there is a one-way bridge placed at random, and there are only two cars on that road, it follows that: (1) the two cars are going in opposite directions, and (2) they will always meet at the bridge. Hogg's Law of Station Wagons The amount of junk is in direct proportion to the amount of space available. There are many laws in the physical sciences, most of which have mathematical equations that govern them. It's called Murphy's Law. Murphy's Law of Thermodynamics: Things get worse under pressure. The Law of Truly Large Numbers is similar to Murphy’s Law. Law of Gravity - Any tool, when dropped, will roll to the least accessible corner. Law of Mechanical Repair - After your hands become coated with grease, your nose will begin to itch and you'll have to go to the rest room. (This corollary is often elevated to the rank of a law. Anything that can go wrong will go wrong. Since it is only a special case of Murphy's Law, though, it provides further justification for elevating Murphy's Law to a demi-law.) In its simplest form, Murphy's Law states: If anything can go wrong, it will. It states that with a sample size large enough, any outrageous thing is likely to happen. Everything takes longer than you think. It is not a law, it is an adage and it can be applied to so many different situations, that it is very hard to talk about a mathematical formula that can describe something constant in the vast variety of cases it covers. Murphy's Law definition is - an observation: anything that can go wrong will go wrong. 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