That's precisely the point here.

There were three kinds of iPad naysayers:

1. iPad sucks compared to the tablets released in the 90s. They had more features.

2. There is no market for tablets, tablets are dead. It's been tried and failed.

3. The iPad isn't useful for anything. It's just a big iPhone.

(1) is wrong because it fails to recognize "ease of use" and "style" as features.

(2) is wrong because the market was not educated on tablets and therefore tablets were not truly tested -- no one did the sales and marketing work that is necessary to introduce a new technology.

(3) is wrong because, like usual, people with only a hammer can't imagine using a screwdriver. It's necessary to educate people on the value of innovative technology. Future-oriented product people such as myself were waiting impatiently for both the iPhone and iPad since the 90s when they first became technically feasible. They were held back by entrenched telecom monopolies, bad UX, and poor marketing/sales.