"The idea is that the same thing is true for colors, that there are certain kinds of colors that are characteristic of stuff that's good for us as a species -- clear sky, clear water -- and stuff that's bad for us, like rotting foods, biological waste products, " he said.

CNN: Is 'red' the same to all creatures?

The change is a true quantum leap, a death and re-birth, and the main characteristic of the new system is that it can handle the fluctuations, the input from the environment, that overwhelmed the old system.

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