Webmaster Colin has updated our software, one benefit of which is that my Twitter feed can now appear in the right-hand column.  If everything works (including me), there should be photos, links, and all sorts of goodness over there.  Longer posts will still go in this space.

Another effect of the changes: the addresses of many articles here have changed, so inbound links from other sites may be broken.  If you've wound up here on the main page by accident, that's why the search box is now near the top of the page.

You may also find some odd formatting and such while we clean up the loose ends, but things mostly seem to be working out great.  And if the page is displaying at a funky width, there are little white icons at the far upper right for twiddling with that.

Circular Reasoning, a new puzzle I designed and wrote for the op-ed section of the New York Times, is up!

My brief companion essay is here, and the introductory essay by novelist Arthur Phillips, who introduced me to the editors, is here.

It's meant to be hard and yet amusing enough that you'll want to share it with a friend or family member and work it together as part of your long holiday weekend.  Did my best, anyway.  Enjoy!