"The plot, so-called, uses up almost two hours in exposition of scientific advances in space travel and communications, before anything happens, [including] the surprisingly dull prolog… Film ends on a confused note, never really tackling the ‘other life’ situation and evidently leaving interpretation up to the individual viewer. To many this will smack of indecision or hasty scripting."
Answer 2001: A Space Odyssey
While plenty of critics praised 2001 for its incredible special effects at the time, some critics thought the plot was lacking in areas. The movie has gone on to influence many science fiction films since its release.
Asked by Mike Bedard · Last updated 5 years ago · 612 views · SOURCE