Metaphysical Physicalism: All objects and entities in existence are composed solely of physical matter. If this is true, then the gap between machine learning and human learning is (primarily) a question of differing physical matters being combined differently and not one of any special property belonging to humans (or other thinking creatures) alone.

Probabilistic Epistemology: Belief and knowledge both necessarily require the handling of vague content and therefore also require a consideration of the likelihood of veracity of any given premise. It also entails that formalizing much of our knowledge into logical symbology demands the usage of fuzzy and other non-definitive logics. 

Meta-ethical Anti-Realism: A rejection of the claim that morality holds any reality outside of the minds of those capable of thinking about ethical questions. It does not say that there cannot be normative or practice moral judgment (much along the lines of not confusing legal ethics for morality).