WHAT if you could get onto the web with the mere flick of a switch without bothering to dial in and run up huge phone bills; what if you could surf the Net at breakneck speed on your telly; what if you could ask for a movie of your choice on the cable line and watch it at your con-venience or get your pulse or heart checked up at your doctors clinic sitting right in your living room; what if, in an emergency, you are assured by the police of green traffic lights throughout your journey; what if...