Punctuated equilibrium.

Ray Comfort's Daily Evidence

To skirt around the fact that the evidence refutes Darwin’s theory of gradualism, some scientists have proposed their own theory: punctuated equilibrium. This theory, championed by Stephen Gould and others, proposes that evolution happened in rapid spurts (by some mysterious genetic mechanism) followed by long periods of stability. They suggest that species had to evolve quickly based on sudden changes in their environment, such as a flood or drought.

There are a couple of problems with this theory as well. First, according to the website “Understanding Evolution,” which explains evolution to teachers, “Factors in the environment…are not generally thought to influence the direction of mutation.” They state that experiments showed mutations “did not occur because the organism was placed in a situation where the mutation would be useful.” Again, mutations are completely random and not based on the environment. So if there is no evidence to show that mutations…

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