To Jan Liggett @cityofcambridge Isn't it always this way? The implication from self-identified "progressives" is always this: "We don't invite or listen to people we don't agree with." No, people:  what we badly need in this country is healthy debate and viewpoint diversity. Dismissed by your reporter as controversial, Michael Shellenberger is a noted author and journalist, who has broken major stories, including on the Twitter Files, for which he won the 2023 Dao Award for journalism; the Censorship Industrial Complex; San Francisco’s cash incentives for homelessness, among many other topics. We should consider ourselves fortunate to have such a well-known speaker and writer appear at a local conference.