Tennant's either too lazy or too bitter about people's excitement to explain his position. Which is too bad, because he's right. And, as anyone who's taken eighth grade algebra knows, you get exactly zero credit for getting the answer right if you fail to show your work.

The iPad on its own can't save an industry or profession. Just like Dorothy, the media companies are the only ones who can save themselves--and they've had the power to do it all along.

They've simply chosen not to.

Cory Doctorow (motto: "What's a 'suit'?") is significantly more up to the task of of the iPad than Tennant or Kiernan.