I doubt that if you took the smartest people today and equipped them with the knowledge and resources around at the time - and no more than that, so no modern insights or historical knowledge - they'd be able to do what Turing, Flowers, and the others did.
Reverse engineering and breaking an encryption protocol by hand and then mechanising it with just math and valve technology was an astounding achievement.
The world was arguably also less complex back then, so there was plenty of low-hanging fruit to snatch in terms of information theory
Don't let the Hideo Kojima's of the world fool you into believing they did everything themselves. It's an effort of many, many who do it for the love of the craft and are content to receive no praise for it
You can usually make the argument that any particular scientific or engineering revolution would have happened anyway with different people nor more than 25 years or so later, at least any advancement since the mid 19th century.
You need steam power, chemical batteries, basic metallurgy, and the telegraph to make global communications networks obvious.
With constant conquest and expansion Rome was full of slaves which distorted the market need for mechanical power.
Hero of Alexandria made a little steam powered spinning toy which could have been the inspiration for steam power and the industrial revolution but it wasn't and the western empire was already on the path to decline. When the expansion hit its practical limit Rome fell apart instead of industrializing under the effects of Christianity and a series of decadent or just bad emperors.
Rome made ENORMOUS strides in the advancement of civilization when it came to organization and institutions it just didn't hit the industrialization spark and stopped advancing.
Sure but the rhetoric of hate and disastrously racist things were happening well before the war took place and soon after the party took power. It wasn't some mystery that these were terrible people, the extent of awareness of what they were capable of just got gradually worse. In an age of bigotry they were still extreme but not THAT extreme if that makes sense so some people were overlooking their words and actions in order to praise the return to prosperity. But anybody with good sense and a decent disposition knew very early on that these were bad people and not a desirable change.
It would be a mistake to associate either just with wealth and tax brackets.
Those kinds of documentaries muddle the water by being too conspiratorial and not building an idea of things that actually happened in context instead they're just raising the spectre of one cabal or another. They just make you afraid and say whacko things which is counterproductive to actually recognizing and forming actual resistance to real threats like present day reality show themed fascism by insecure idiots in power. (it was a much scarier time when the fascists were competent)