What you get is talking heads saying perfect sentences, in perfect order. Basically it's a Wikipedia article converted to live action people saying it, with some effect shots sprinkled through. That way giving you assumingly lots of historical information, but zero entertainment. I would have enjoyed a voiceover much more.

The dialogues are a bit like the classic Star Trek series: Impossibly perfect. But 100% informational, at a much higher pace, and with no time to breath or recapitulate. For 3 hours. It was so bad that it made me giggle at some point, probably out of misery.

When I realize how much hard work has been put in by the best people in the industry, my bones start bending and my skin crumble. So much work and what do you get? A never ending inferno of talking heads, spewing informational dialogue:

Bla bla bla bla *BABOOOOM!* bla bla bla bla

The BABOOM is the only cinematic moment in this movie.

Everything except the BABOOM is smeared with music up to very high annoyance levels in an attempt to spice up the blablabla. Also, some sound design made no sense at all and made my eardrums bleed.

This movie is totally overhyped and overrated. Don't believe the hype and just watch and old documentary or read the book if you have to.