ST-One
Vice Admiral
Granted, but 2001 can.A movie has a problem (lots in fact) if it can't stand, and be understood on its own.
No, really. There's an internal logic to the whole structure of the movie that's understandable solely by judging the film's own merits. Just for one thing, note the trajectory of the scenes: We move outward. From Earth, to Earth orbit, to the moon, to beyond the moon, to Jupiter, and then... beyond the infinite.
If that is the point of that film, then the final scene of TMP gets it far better across 'Out there. That away.'