Imagine that this blog is just like our living rooms.

Come in, join the debate, argue long and hard, or read posts quietly. Recommend a magazine, article or book, point out a great website, mention your new greatest theory.

But don’t come here looking for a fight, don’t insult anyone, do not troll, be polite. We know that making everyone welcome depends on civility and commonsense, and the host knows how to show people the door.