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Ugh. I wanted to like this. The premise is intriguing and Lem’s idea that our imagination of aliens is extremely limited is fantastic and I would love to explore the concept of a planetary pan-intelligence. But he doesn’t get there. He just prattles on about made up science and how nobody understands the planet. The story doesn’t get you anywhere - the characters do not evolve or change from their contact with Solaris, they are mostly apathetic and paper-thin. Concepts such as what makes us “real” and whether one intelligent being can or cannot be described as self-aware are touched upon and promptly abandoned. A shame.