Jaron Lanier spoke at The RSA on 1 February 2010 to promote his new book You Are Not A Gadget: A Manifesto.

This is essential reading for anyone involved with the online world. It takes a refreshingly honest look at the first generation of web applications and the way the web has evolved. Check out the talk below then buy the book and delve deeper into his arguments.

Even if you disagree with his perspective, your understanding will be enhanced by having to work out why. And you get treated to a unique musical introduction, too.