We have a dilemma by watching the movie "2001: A Space Odyssey" today then when the movie was actually made in the 60's. Back then the visuals, plot, and concepts portrayed in this movie were an epic landmark in the movie making community. Now, this movie is out of date and some of the science and styling have changed. People now-a-days mostly want some mindless pictures on a screen, no one wants to really THINK about what they are watching. This movie is purely what the viewer perceives, of course the director gave you a little push to some sort of thought, but it is up to interpretation on what the movie itself actually means.
One of the only real problems with the physics in the movie was a scene where one of the astronauts is in the vacuum of space without a helmet on for a little over 30 seconds. This cant be proven per say because we don't know how tolerant the astronaut's body was to these conditions. The only other thing was the walking style of the astronauts on the surface of the moon. This was only because of a lack of resources. All in all the physics of the movie were fantastic.
The movie itself was fantastic! You will have to really pay attention to little details and think a lot but those, in my opinion, are the best type of movies. Instead of being just flashing lights on a big screen to entertain the audience for two hours, this actually had a deeper meaning to it. To me that shows that they actually put forth a ton of effort to make this movie as deep and as accurate as possible.
All in all I'd give this movie a solid 8 out of 10. Some of the scenes were unnecessarily drawn out when they could have possibly been cut in half. Instead of being 160 minutes the movie should have been cut down to at least 150 minutes. I know some of the drawn out scenes had a deeper meaning but there were a few that were just too long for no reason. The scene with the man talking to his daughter on the phone was, in my opinion, too much wasted time.