[Aquinasfan]

They do, which is tangential to the subject of whether Nazi genocide was good for the species.

Define "the good for the species." Who survived, the Jews or Hitler? Which group is more "fit"?

[Dimensio]

Define "the good for the species."

That which allows the species to continue surviving.

Who survived, the Jews or Hitler?

Jews are still around. Hitler isn't and hasn't been for some time. Let me think about this for a moment.

Which group is more "fit"?

Invalid comparison of a group to an individual. Groups tend to last longer than individuals. Groups can sustain themselves by having the members reproduce. Individals don't do that.

[Junior]

When biologists use the term "fit" it means within a specific environment. Selection is done by nature, not by man. Yes, the Nazis eliminated a large chunk of the gene pool; however it was only based upon their definition of "fit" and not the way nature sees it. The Nazis, in their zeal, could have eliminated whole genetic traits the species would find useful in situations wherein the species comes under environmental stress.