I can be an artist a posteriori, not a priori. If my pictures tell the story, our story, human story, then in a hundred years, then they can be considered an art reference, but now they are not made as art. I'm a journalist. My life's on the road, my studio is the planet.
The study a posteriori of the distribution of consciousness shows it to be exactly such as we might expect in an organ added for the sake of steering a nervous system grown too complex to regulate itself.
Any necessary truth, whether a priori or a posteriori, could not have turned out otherwise