The dramatic narrative of Stanley Kubrick's legendary space epic is meager, to say the least.  Crisply told, it could fit easily into a half-hour episode of The Twilight Zone.  Its core is a duel to the death between two somewhat mechanical human astronauts and an all too human computer on a mysterious mission to Jupiter.  The first 54 minutes of the film are, in story terms, pure exposition, which might have been delivered in a few minutes.  The last 25 minutes pay off the Jupiter mission, but not in narrative terms — the climax of the “odyssey”, and the discoveries that prompted it, remain mysterious, unexplained.  There is no dramatic denouement.

Half the film is thus in essence about something other than drama, other than narrative.  It's about situating us imaginatively in time and space.  The first 20 minutes of the film take place in prehistoric times, and illustrate man's discovery of tools — which he turns instantly into weapons.  The boldest jump cut in all of cinema takes us from a prehistoric weapon spinning in the air to a space ship circling the earth to the strains of a Viennese waltz.  The suggestion is that all human achievement in the interim has been of a piece.  Man the maker has used his toolmaking skills to create art and technology, but these are merely elaborations of a single phenomenon.

Indeed, it turns out that the most advanced technology in the film, the HAL 9000 computer that controls every function of the space ship heading towards Jupiter, is also a weapon, a killing machine — an attribute that seems intrinsic to its nature as a tool.  It cannot help but incarnate the murderous instincts of the species that made it.  When Dave the human astronaut defeats and lobotomizes the computer, it's easy to see this as a kind of metaphorical rejection of technology itself, linked as it is to mankind's murderous proclivities.

Having made this leap, Dave is taken on a mystical journey of rebirth, which presumably will mark a new stage in mankind's development, one as portentous as the one marked by the original discovery of tools.

Both of these turning points of development are accompanied by the appearance of a black monolith, a token it would seem of some higher life form which is prompting man along in his evolution.  The monolith is something of a red herring, however.  It is never explained, the life form it represents is never shown.  It thus becomes merely a suggestive emblem of evolution, or perhaps an admission that the agency of evolution cannot be explained.

What the film is really doing is, as I say, situating us in time, asking us to be aware of our place in time, in a particular stage of human development.  The prehistoric era is distant enough that the discovery of toolmaking seems somewhat fantastic, just as the year 2001 was distant enough from 1968, when the film came out, to make the imminent ramifications of technology seem fantastic.  But we recognize all too well the violent nature of early man, just as we recognize all too well the bland efficiency of the corporate man of 1968, projected slightly into the future.

What makes the film a film, in the end, instead of an illustrated lecture on philosophy, is the way Kubrick situates us in its imagined spaces — on the African savannahs where early man emerged, on vehicles commuting to the moon, on the moon itself, on a craft penetrating deeper into space . . . even projecting us, at the end, into the unimaginable future.

The meticulous, slow-paced exposition of the film's first hour doesn't read as exposition — it allows us to experience viscerally a routine trip to the moon.  The deliberate pace of the duel on the space ship traveling to Jupiter puts us aboard that ship and makes it an environment we can imagine inhabiting.  The mind-bending visuals at the end allow us to feel, if not understand, what confronting a new stage of consciousness might be like.