Human Evolution
Suppose we have a population of 50 million. Suppose that we have a gene that gives you a 10% boost to your worth as a member of a community, in the sense that it increases the number of your children who survive to reproductive ager by 10%.
# log odds ratio for 1/10 million
import numpy as np
np.log(1/(10*10**6))
-16.11809565095832
# log odds ratio for 1/10
np.log(1/10)
-2.3025850929940455
# log odds ratio for 9/10
np.log(10)
2.302585092994046
# time to go from 10% to 90%
25*(4.6/.1)
1149.9999999999998
25*(13.8/.1)
3450.0