[brenschluss]

> The desirability of an individual is often strongly influenced by heritable traits.

I don't disagree with you, but that is not what the paper states, and that is not how the paper defines desirability.

I am not saying that the paper's definition is correct for a broader understanding of biology. Rather, the paper's stance is to generate a simple model and to prove an argument within that model. I am saying that, within the definition that the model is using, the model is internally incorrect.