on subject
I do not think that corruption is describing race. The quote was just referring to the downside to human's versitilaty. That they tend to mess with things that they should not.
Irda Ranger said:
I would disagree with your conclusion here.
1. the h-t marriage rate is doubling the tieflings population and is not at the replacement rate because the two tieflings are only growing the tiefling population the first one replaces the tiefling parent and the other simple adds to the population because the human parent is not calculated in for the tiefling population.
1a. At the same time the human parent that is with the tiefling is simply removed from the human population because he/she will not produce human offspring, it would be no different if that human had died in adolescence as far as population growth is concerned so you are also decreasing human fecundity/generation exponentially as well.
2. You are also assuming that there is enough resources to support the growing tiefling population. Perhaps in a human kingdom non-humans are not considered citizens and so are barred from many benefits and perks and thus the resources to provide for a mate and offspring are reduced making human partners much more appealing.
2a. You are also assuming that all offspring will produce offspring of their own and ignoring any difference in death rate for the two populations. Tieflings may have a higher death rate than humans due to reduced access to resources mentioned in point 2.
3. I am about to completely disagree with point 1a because fecundity is not calculated based on total population size but solely on the population of females because that is the limiting factor regarding fecundity. Human males can hook up with tieflings as much as they want and it would not affect the fecundity of the population as long as there are enough human males to marry all the females in the population. Granted female humans marrying tieflings will affect fecundity but we do not know what the majority of h-t matings are.
In conclusion, population ecology while interesting (I am an ecology major for a reason), it is also complicated and I would rather focus on killing things and taking their stuff then mess with calculating fitness rates. Also I think I misused the term fecundity a couple times, fitness is the term I should have used, consider the terms interchangeable
(aside I find it funny that my first post is discussing the fitness rates of tiefling and human populations.)