[from the technical term `logical device', wherein a physical
device is referred to by an arbitrary `logical' name] Having the
role of. If a person (say, Les Earnest at SAIL) who had long
held a certain post left and were replaced, the replacement
would for a while be known as the `logical' Les Earnest. (This
does not imply any judgment on the replacement.) Compare
virtual. At Stanford, `logical' compass directions denote a
coordinate system relative to El Camino Real, in which `logical
north' is always toward San Francisco and `logical south' is
always toward San Jose-in spite of the fact that El Camino Real
runs physical north/south near San Francisco, physical east/west
near San Jose, and along a curve everywhere in between. (The
best rule of thumb here is that, by definition, El Camino Real
always runs logical north-south.) In giving directions, one
might say: "To get to Rincon Tarasco restaurant, get onto El
Camino Bignum going logical north." Using the word `logical'
helps to prevent the recipient from