ORIGINAL: The Guru
If, as Hitler, there is no limit to your decision spectrum, then why not, indeed, streamline production immediately, levy the Volksturm in 1941, issue adequate winter supplies to the Army, recall the Einsatzgruppen and implement friendly politics in the conquered territories to increase Hiwi flow and reduce partisan activity, etc.
Exactly the point. Some of these make a convincing case (at least for me), like going to war production in 1941. That, I think, is within the reality of what could have been possible with better planning. Other actions, like treating the occupied territories friendly, seem quite improbable with Hitler being the homicidal maniac he was.
On the Soviet side, the question is whether it could have been possible (or not) that Stalin could have authorized retreat, at about 2-3 weeks into the war. The point for retreat is that Russia did exactly that against Napoleon, that the USSR did very poorly in the Winter War, and Stalin authorized the retreat to Stalingrad in 1942. So, if Stalin got in that mindset in 1942, why couldn't he have reached the same mindset in 1941?
On the other hand, there is one guy that does (serious) gaming of political thinking, and he says he can predict most government's actions with great accuracy by focusing on what the government leaders should do in order to keep themselves in power. If that's true for Stalin, then perhaps the main argument for not retreating is not that Stalin was an idiot, but that he probably thought he would not survive that retreat. The argument for this point of view is that in 1942 he was politically stronger, while in late Jun-1941 he at one point thought he would be shot by his party (that's documented).