You have to place the questions on eugenics in society at that time.
Eugenics at that time and still today is a JEWISH programHow they can know how to better a man kind is hard to understand?
Look up Margaret Singer and the people who influenced her as a fine example of how Eugenics in the Weimar Republic was transplanted to the US and from there too the world.
See:
http://www.theinsider.org/news/article.asp?id=0503 "According to the Israeli daily newspaper quoted below, before the Nazi Third Reich in Germany plotted to create a Master Race from the European gene pool, Zionists had already established a racial purification program to create the perfect Jewish bloodline."
and
http://www.jewwatch.com/jew-mindcontrol-eugenics.html“The Jews, ancient and modern,” says Dr. Stanton Coit, “have always understood the science of eugenics, and have governed themselves in accordance with it; hence the preservation of the Jewish race.”
and
http://galton.org/essays/1900-1911/galton-1910-jewish-chronicle-eugenics.pdfeeEugenics and the Jew. - Sir Francis Galton
They always are the best at accusing themselves!Just like today they fully subverted medical science and where the ones that had trained the doctors on eugenics already - that eugenic mindset had been carried forward into the Third Reich, BUT like always they are now the once pointing fingers at National Socialist so that no one will look at them.
Hope this helps.