Q2. What is the key to the success of a person in human societies?
A key to the success of a person in human societies is the ability to make trustful cooperative relationships with many other people.
Q3. What is the probability that the pair approximation fails?
It is quite plausible that pair approximation fails if the whole system is segregated into large subareas in which the relative density of TFT and AD greatly differ and long range spatial correlation of states is large.
Q4. What is the corresponding rT for the case of w=0.6?
Bistability was observed for the case of w=0.6—TFT is fixed in all 50 runs if the initial rT is 0.7 and 0.9, but AD is fixed if the initial rT is 0.5 or smaller.
Q5. What is the probability of a single mutant being invaded?
If the invasion of a single mutant is not a unique event but occurs recurrently, then a small but positive probability of establishment is sufficient for the ultimate success of invasion.