That Stephen Spielburg was able to do it with computer graphics has no bearing on the validity of someone making it exist in the real world.
The reason I am hesitant to debate this issue is because, as you have amply demonstrated, the anti-patent people often don't even understand what a patent IS, let alone what is relevant as "prior art", and are so exceedingly hostile, and often, quite frankly dishonest (e.g.: you'd have to understand what a patent is in order to understand the multi-touch patents.) that it is just a waste of time.
Literally, I am tired offending the trolls. There is nothing to debate, because I've made my case, and you're just going to object and object and object and find another movie to reference and be proud (rather than humiliated!) at doing so!