Word 'pointless' is the one that should be attributed to this whole film, one of the worst to come from Hollywood in past decade and one that would test patience and temper of the audience like few others.
Let's face facts: Michael Crichton is a hack. He comes up with innovative concepts, but his characters are cardboard cutouts. Given the psychological foundations of the story, that's an egregious flaw, and the ending is absurdly dissatisfying.
Sphere yearns to be a philosophical epic but it's final and only edict is so rudimentary as to barely exist: man is not yet 'ready' either intellectually or emotionally for the gifts E.T.'s are willing to share with us.