Steam Vent Release - Here There Be Blitherings

(An unedited stream-of-consciousness rant that I had to get out of the way to finish reading Bruno Latour's Science in Action.  It isn't his fault; this is just the sort of thing these readings tend to do to my head.)

What is like to be able to think that there is one and only one objective (and knowable) Truth?  To think that perception, even sensory perception, is uniform and explicable, and exists independent of the way we are socialized to experience it?