This is the first thing that struck me. Dangerous to weave narratives where large scale phenomena are elegantly explained by a single cause. It's always a confluence of multiple factors: influx of Nazi scientists, the policy mentioned in the article, the fact that Europe was recovering from a war, and perhaps others we're failing to notice.

A favorite example of mine is the idea that World War 1 would not have happened if only Duke Ferdinand's driver had been told of the route change during the Sarajevo visit.