He uses the example of classifying guilty or innocent people by their gender and that Saint Peter sends four males to hell for being guilty, but also send the one innocent male to hell just because he is male. While sending all the males to hell Peter sent the four innocent females to heaven along with the guilty female. This example shows that an argument like that is absurd to determine the fate of the people in the afterlife. This would be the same in the marginal cases. Just because one animal species lacks that quality does not mean all the animals in that species
He uses the example of classifying guilty or innocent people by their gender and that Saint Peter sends four males to hell for being guilty, but also send the one innocent male to hell just because he is male. While sending all the males to hell Peter sent the four innocent females to heaven along with the guilty female. This example shows that an argument like that is absurd to determine the fate of the people in the afterlife. This would be the same in the marginal cases. Just because one animal species lacks that quality does not mean all the animals in that species