Is Science a Justification System?

"I'm basically saying science is not just some pristine, logically empirically derived entity that is completely removed from human knowing," he says. "If we were to find an alien life form that engaged in propositional knowledge about the world and had a model for how the material universe worked, that model would include the four fundamental forces ... There's just no alternative." He adds: "Our ontology is not epistemologically derived or dependent but is actually independent of just our knowing structures"