Marry a chicken and follow a dog.

The environment has changed, so has the nature of things.

Extended data:

Interpretation of Huainan citrus, transplanted to the north of Huaihe River, became bitter citrus reticulata. Metaphor environment has changed, and the nature of things has also changed. ?

Source "Yanzi Chunqiu Miscellaneous Ten": "Babies smell it: those born in Huainan are oranges, and those born in Huaibei are oranges. Leaves are similar to disciples, but they taste different. What's that? The soil and water are different. "

How to reflect the diversity of species in the long river of biological evolution? "Oranges born in Huainan are oranges, and oranges born in Huaibei are oranges", which is the need of mutation. When species evolve, they sometimes mutate, which improves the diversity of species. In genetic algorithm, mutation makes the solution more and more complex, which makes the algorithm traverse all the solutions in the solution interval as much as possible.