We think there should be a public zone and a private zone, but I favor a much greater separation of the public and private than he does. He's writing a book called "Public Parts," which will show the various ways in which we gain by making our lives public. I believe he will also be arguing that so-called privacy advocates are often given too much weight in debates about the right mix of public and private. That may shed some light on why he thinks the criticisms of the TSA are overblown. He has also written about how his experiences on Sep. 11, 2001 changed him, and possibly this is a factor in his calm acceptance of what the government is doing to protect the traveling public against further attacks. I emphasize "possibly." My own philosophy--and personal preference--is for a strict separation of public and private. I think this is necessary for human dignity and civil liberty, but also because the public realm cannot operate well if it commingled too easily with the private and intimate spheres.