New categories and menu item

I’ve added a menu item called “Old but Active” where you can find threads that are still creating discussion but which have dropped off the front page.

I’ve also added two new categories, one for Upright Biped’s Semiotic Argument for ID and one for Granville Sewell’s (or anyone else’s) ideas about the 2nd Law of Thermodynamics.

I hope this will make things easier to find.  The search engine actually works fairly well, though.