are you talking about the whole vision of the future as seen from the 1930 worlds fair? IF you are , then origionally walt had this concept down pat with the origional tomorrow land in disneyland in california. if you follow the vision of the future as seen from the 1930's through the mid 1960's it was very positve outlook. contemporary styling in abundance, we would all have robot survents, and flying around in sci fi style cars and takeing summer trips to the moon. in the origional design of tomorrowland walt had the house of tomorrow, which displayed how we would be living in the future, autopia back then was a vision of the future. the carosel of progress was a discriptive ride on how we got there. other included mission to mars, adventures through inner space, and the monorail. the monorail was in the future supposed to replace trains. unfortunitly, when the future became today things did not plan out how the speculated back in 1939. most stuff just became fads, contemporary styling never really grew and wasn't as popular as one would have hoped. the "space age" of thinking turned tailes into the information age. autopia turned into traffic clogged highways. space travel still proving to be very costly. robots turned into cell phones and pc's connecting to the internet. so things that were thought to be intreguinging and cutting edge in 1939 has become fad or a part of our everyday life, so it isn't as fantastic as it was back then. so tomorrow land became yesterday land. now how dose that compare to EPCOT. well EPCOT was a vision of the future from the 1980's. it's 80's style contemporary look at the future was awesome at the time, however, in 1985 no one could even think about the future and how information pc's graphics cell phones and new technologies would go. so EPCOT is essentially NOT the futureistic ideas from 1939 but from futuristic ideas from the 80's. essentially a worlds fair aptnesphere but with a whole new vision of the future. robots were back because pc's and computers were still new. it had diffrent pavilions with vision of how we would live in the future(Horizons), how we would travel in the future (world of moton), Imagination so we would think about new things for the future and conservation (the land, living seas and universe of energy) World showcase to me mens that technology effect everybody and all cultures, so we can't have a future without the people that will be in it. so, switch back over to the present, in just 20' years, technology has progressed so fast that disney is haveing a difficult time keeping up, video games microwaves, airbags, safty, cell phones, computers, computer games, the internet, all took a foot hold.
The WOW factor of the 80's deminished pretty quickly, now future world is now today land, now technology moved so fast it took les time for that to happen then it did for tomorrow land to become outdated. so I think disney has done a good job with keeping up aperances the best they could. and I think changeing epcot a little, though some pavilions will fit (imagination, the land, living seas) some disney thought would not or was severly outdated.(world of motion, horizons,etc). my opinion is a vision of the future has to have a start and an end point. new things come out everyday so it would be very hard and costly to keep up. I think if disney changed future world to discovery land then it would lqast longer, example, discover the land, the seas, your imagination, discover the universe(mission space) discover transportation(test track) etc. disney wouldn't have to worry about things becoming out of date so fast. so in conclusion comparing EPCOT of today top the 1939 worlds fair is useless, since there goal is the same a vision of the future, the thinikng of the times would change the way the future looks. also the future catches up to you today faster then in the past, so whats futuristic today may not be tomorrow.