Here's the piece I wrote for ZDnet on the session:
In a conversation at Google's I/O developer event in San Francisco on Wednesday, Brin pointed out how software gets twice as slow every 18 months — an effect he named 'Page's Law', after his partner Larry Page and in an ironic reversal of Moore's Law. Brin committed Google to bucking this trend: "I want to break this law. I want to make software increasingly fast," he told an audience of reporters.
"Clearly browsers have been improving, and programming models have improved too. Nobody asks today 'Can you have this on the web?' But we still have a long way to go, particularly in respect to performance," he said.