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>OK, let's set the date, what about 1-1-2015. If there are no desktops, laptops or media centers by then, and only handheld devices, then I am wrong. But seen history repeat itself over the last 50 years, I don't think I will be wrong.

You bet u r right :)
Maybe it is just me, but I absolutely hate mobiles/handhelds.
I wrote in total not more then 100 text messages in my entire cellphone career/life and every and each was ultimate frustration.

While on Travel I can understand, but for regular office chores handheld simply doesen't make any sense. Anything less then 15 inch in screen and 10 inch in keyboard is royal waste of time.
Ever since PC revolution took place, Decrease in size is almost directly proportional to decrease in amount of work that can be done on them.

As for 10-30 years from now;
I remember as a kid watching that show called 'Beyond year 2000'.
That were all darn lies & propaganda !!!
They said cars will fly by now, and they still choke on a stinky old diesel !

Cheers :))