Before I saw the device in action, I would assume that gravity would work. Once I saw evidence that the device defies gravity, I would change my understanding of when gravity works, so that it incorporates the effect of that device.If you were in an anti-gravity device would still expect gravity to keep you on the ground? How would you know that it won't?
It has been theorized that the whale evolved from a creature similar to a cow. Approximately forty million years ago cows began venturing into the water for various reasons and lo and behold... the whale was produced!
And now through the magic of computer generated graphics (CG) this amazing story of evolution can finally be told.