Modelling engine wear and WEP limitations

[Crumpp]

V. A. Kalichevsky, author of the 1943 book The Amazing Petroleum Industry wrote:

The author might know about petroleum but he certainly does not know about engines or was not aware of the Germans direct fuel injection.

I don't see what the point is other than a book during the war offers a glimpse into the thinking of the time.

I suppose we could take the eugenics theories of the day as fact too??