Half a world
"Thus, Anaximander's universe and its later modifications are uniform. And yet they are not complete. They do not contain mythological events, dreams or spawns of imagination... We push the events in question out of our physical world and into another world, which is conceived of either as a world consisting entirely of appearance, of non-reality, or as a very real yet non-physical world… In both cases we obtain an antiseptic real (physical) world at the expense of insurmountable problems: how can we reunify domains that are so radically separate? Increased specialization makes the problems disappear from the researchers' horizon, which only strengthens said researchers conviction that their professional ideology is indeed capable of successfully overcoming all difficulties." -- Paul Feyerabend, Philosophy of Nature, pp. 126-132.