Picks and Pans Review: Smart-Guy to the Stars

updated 05/26/2008 AT 01:00 AM EDT

originally published 05/26/2008 AT 01:00 AM EDT

Who has the better deal: celebs who look serious hanging with economist Jeffrey Sachs (author of Common Wealth) or Sachs himself? Three reasons he thinks he wins:

1 HIS DO-GOODING PALS DO THEIR HOMEWORK Bono runs circles around the politicians. The smarts of these celebrities are remarkable.

2 THEY HAVE THE COMMON TOUCH You go to an African village and people don't know who Angelina is. She's just in there with people, chatting. She has incredible reach.

3 THEY SHINE A LIGHT When you have Madonna, Brad Pitt and John Legend leading the way, people want to get involved in changing the world.

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