Albert Einstein once wrote, Imagination is more important than knowledge. Why? Because it is movies like this will test your ability to receive ideas and knowledge that exists outside of your belief system.
Resist the temptation to shut down your mind, and open yourself up to possibilities which 'traditional' science is reluctant to acknowledge. If you wonder why films like this are pushed to the back of our collective human psyche, you find there is formidable motivation to not entertain new science and ideas as it fundamentally questions the foundations on which conventional (mechanical) science is based.
Science does not move humanity forward per se. It provides 'evidence' to support ideas that have long already existed. Hence why Einstein said IMAGINATION is more important than knowledge, as it is our ability to think outside the square that allows us to evolve consciousness while science scratches its head trying to explain it within its existing paradigm. Meanwhile the paradigm has changed.
"All truth passes through three stages. First it is ridiculed. Second, it is violently opposed. Third, it is accepted as being self-evident." Arthur Schopenhauer
This is so true. Think about it.
It does however drag on at stages, and bless Stevie, it wasn't his best work. If it was revamped for today's audience and pace, it would've got a 10!