 Various people have helped with this and prior renditions. We thank Ruth Barcan Marcus, Willem DeVries, Risto Hilpinen, Lars Lindahl, David Makinson, Simo Knuuttila, Andrew Jones, Lou Goble, Mark Sergot, Jeff Horty, Mark Brown, Leon van de Torre, Xavier Parent, Ilaria Canavotto, Federico Faroldi, Georg Spielthenner; Reto Givel, Wojciech Żełaniec.]