Throughout history people were searching for more fundamental laws than they already know. A law which has the character of making other laws superfluous, because they can be explained with it is called a more fundamental then the law that can be explained with it. For example scientist are still considering the fact, that chemistry is less fundamental than physics and math, because if you could calculate the exact movements of all the mass-particles, you could calculate what physically happens in chemical reactions and chemistry so gets superfluous. Well, Murphy's law can eventually be described as the most fundamental laws. The motor of the evolution is the mistake.
Mutations is, what makes the evolution continue and what caused the development of the species.
And mistake is created by Murphy law. The Chinese called this compromise Ying and Yang. Whenever I DON'T work on Wednesdays, which is always pretty slow, there's a lot of business. When I work Friday nights, one of the busiest nights of the week, it's dead. If anything can go wrong at work, it will.