Well, you're right Aaron, I think the movie made a terrific storyline that caused you to think a bit, and imagine "what if" about your dreams and the effects they may have on you.  But in another sense, the film really soared to new heights in my book due to its concentration on asking what it took to make a dream believable.
If for example to connect it to games, you only notice the inconsistencies of the dream only after you've woken up, as if, like they said in the movie, only the things you focus on are what you care about; the setting or whatever happens in the long haul of a dream can be nonsense and you wouldn't care.
In games, perhaps like Flynn has mentioned before in other topics, about a game like Half-Life being more realistic, well, it could be argued, that HL was realistic in the ways that he thought mattered the most, because he focused on those details the most.  For example, it may be more realistic for Gordon to play with his weapons after not firing them for a while, or for a fallen foe's remnants to remain solid, but these issues fall in comparison if you line up all the inconsistencies HL may have with the real world...
Gordon never sleeps, he picks up things by walking over them instantly, let alone heal himself instantly.  He can carry 15+ huge weapons without slowing himself down....  The list goes on; my point though, is that in this way, a game developer may be able to focus their attention to what matters most in their game to keep alive that suspension of disbelief, because essentially that's what it's all about.  You need to keep the player believing they're not really in a game world, and that this place could possible exist given the right circumstances, and that your player character could actually thrive in the way they do in the game...possibly.
Maintaining a strict regiment on how well your player will be drawn into your level and set of core gameplay rules may affect how well those players "tune-in" to your environment, and really believe and act in a manner as if they did.  They should want to role play that character they're controlling. Do the things they would do if that place really existed.
                                            
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Eric Lancon
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