Instruct: Classify Amazon reviews into positive or negative sentiment
Query: 2001: A Space Odyssey

Above synopsis only begins to describe this most cosmic, dense and challenging of science fiction films, which director Kubrick co-wrote with sc-fi author Arthur C. Clarke. "2001" relies on images more than words to convey its multi-layered tale, which starts with the dawn of man. Profound and cerebral, the film may feel slow and ponderous to those accustomed to "Star Wars", and its vision of the near-future betrays its 1968 origins. That said, it's still an impressive and absorbing mind-blower, a work of genius from Kubrick, working at the top of his game.