MacKay comments on Kimura’s and Worden’s work and its relation to his own on page 12 of the paper. In particular, he notes that in Worden’s model, fitness isn’t defined as a relative quality involving competition with other individuals in the population; rather, one’s genotype determines the probability of having children absolutely. MacKay says that this is how Worden proves a speed limit of one bit per generation even with sexual reproduction, but he doesn’t do any math on the point.
MacKay comments on Kimura’s and Worden’s work and its relation to his own on page 12 of the paper. In particular, he notes that in Worden’s model, fitness isn’t defined as a relative quality involving competition with other individuals in the population; rather, one’s genotype determines the probability of having children absolutely. MacKay says that this is how Worden proves a speed limit of one bit per generation even with sexual reproduction, but he doesn’t do any math on the point.