The tablet is a fad: Is Blackberry boss right?

Thorsten Heins, Chief Executive of Blackberry, went on record saying that tablet computers may just be a fad, and that the company may not go ahead with a follow up to its PlayBook device. He estimated that in five years there won't be a reason to own one any more.

However, figures revealed today show that in the first three months of this year, sales of tablets were up 143%. So is Heins right, or is he in the hall of fame of those who dared make technology predictions?
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