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Orgel's First Rule
This "rule" comments on the fact that there is a great number of proteins in all organisms which fulfil a number of different functions through modifying chemical or physical processes. An example would be an enzyme that catalyses a chemical reaction that would take place too slowly to benefit an organism without being sped up by this enzyme.
Orgel's Second Rule
"Evolution is cleverer than you are."
Orgel's Second Rule is intended as a rejoinder to the argument by lack of imagination. In general, this rule expresses the sometimes experienced fact that "trial and error" strategies are better than centralized intelligent human planning.
Orgel's rule can also be used to counter creationist arguments in which often the hidden and non-provable presumption is suggested, that human intelligent planning is in general superior to trial and error strategies used by evolution.
The same principle has been given as an analogy to software developed in an evolutionary sense by group collaboration, as opposed to software built to a pre-ordained design that was created without reference to previous implementation. Although, the development is not claimed to be of the same random nature as is by evolutionary genetics.