Kubrick got advice from America's leading computer and aerospace engineers and asked them what they were working on in future development and got them to speculate what things might look like 15-25 years away rather than centuries away,
If you look at the Pan Am clipper which took Reggie Perrin into space it is pretty much the Shuttle with an added nose cone, longer wings and an engine on the back. Hardly surprising that at exactly the same time as the film was being made NASA invited tenders from aerospace companies for a reusable spaceship.
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The 2001 computers looked more like the racked systems we see nowadays whereas in reality computers of the time were boxy cabinets like this IBM S/370:
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The real irony that seems to be lost on the moon hoax tinfoilers is that if someone like Kubrick filmed it he would have made a damn site better fist of it than the clunky piece of heavy metal, nuts and bolts and dodgy graphics , comms etc that we actually got.
Yup, if it was a ‘production’ a la studio style and production values, Hollywood would more likely make the faked landing look more in keeping with our expectations.