It's an academic book, and it's discussed under academic criteria. German historians cultivate so-called objectivity. They persuade themselves that they can switch off the subjective and therefore the unsettling.

A large part of academic community is unthinkingly self-involved, producing reams of sterile writing - often consuming unbelievable amounts of public funds - and serving as an instruction manual for how to chase away readers and ignore historical insights.

The notion of a healthy society, of capable people who are able to enjoy life, arose in the liberal, middle-class, leftist and non-religious segments of society. The euthanasia idea came from neither the radical right-wing nor the conservative corner. It was and remains part of the modern age and progressive thought.

There are children who recognize that they have a special role, and they enjoy it. But there are also many who sense that they can't do what the others can do, and they're happy to be placed in a protected school. It depends on their personalities.