Today's tech wixards seem to anticipate our needs before we know we have them, like putting weather forecasts on cell phones and navigation systems in cars. But they haven't yet satisfied a pretty basic wish―to impulsively watch any movie on our TV, without having to navigate crowded video stores. It makes you wonder: with all the fat cables running into our homes―and the fat checks we write to pay for them―why isn't it possible to just hit a button on the remote and instantly call up a film? The cable industry thinks it has the answer in a new technology called video on demand.
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