But what about the 1990s? Well, that was when I spent a decade as something of a hermit, working very hard on . And the plot makes it very clear why in the late 1990s when one of my children was asked for an example of “being nocturnal” they gave me. The rather dramatic discontinuity in 2002 is the moment when A New Kind of Science was finally finished, and I could start leading a different kind of life.


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