In Section 5.A, we considered testing for ESSs
(evolutionary stable strategies) in the thrice-repeated restaurant-pricing
(a) Explain completely (using Figure 12.10) why an
all-type-A population cannot be invaded by either N- or T-type mutants.
(b) Explain why an all-N-type population can be invaded
by type A mutants, and to what extent it can be invaded by type T mutants.
Relate this explanation to the concept of neutral stability in the chapter.
(c) Finally, explain why an all-T-type population cannot
be invaded by type A mutants but can be invaded by mutants that are type N.