... antibody can bind to and cover a ball of similar shapes, an enzyme can bind to and cover a ball of similar catalytic tasks Just as a finite number of balls can cover shape space, a finite number of balls ... task space, in which a point represents a catalytic task, where a catalytic task is the binding of a transition state of a reaction Just as similar molecules can have similar shapes, so too can ... 82949 March 10, 2004 0:41 Stuart Kauffman a rabbit with A and b would have to wait for a mutation to convert b to B That might take a long time But, with mating and recombination, a rabbit with A...