People, Thomas Sowell says yes! I am not making this up. For realz.
Check it out:
In France between the two World Wars, the teachers' union decided that schools should replace patriotism with internationalism and pacifism. Books that told the story of the heroic defense of French soldiers against the German invaders at Verdun in 1916, despite suffering massive casualties, were replaced by books that spoke impartially about the suffering of all soldiers -- both French and German -- at Verdun.
Germany invaded France again in 1940, and this time the world was shocked when the French surrendered after just 6 weeks of fighting -- especially since military experts expected France to win. But two decades of undermining French patriotism and morale had done their work.
Tom, I'ma NOT gonna let you finish. You have a PhD in economics from the University of Chicago. You should be deeply ashamed of yourself.
Lack of Ceteris Paribus? Check.
Failure to define/consider a reasonable alternative hypothesis? Check
A complete breakdown of logic and intellectual integrity? Check mate.
Finally to those of you who may object to my title by claiming that France did not lose WWII, I say: HA!