- Cognitive illusion(as used in epistemology and philosophy of mind)
- A trick of the mind where we think something is true or that we've found a real problem, but it's actually just how our thinking happens to work—not evidence of anything real.
- First-person character(as used in philosophy of mind)
- The quality of being experienced from your own perspective—what it's like to be you, from inside your own mind, rather than from an outside scientific viewpoint.
- Mary (Mary's Room)(as used in philosophy of mind)
- A famous thought experiment where Mary is a scientist who knows everything about color scientifically but has only ever seen in black and white—then one day sees red for the first time. The puzzle asks: does she learn something new?
- Non-physical entities(as used in metaphysics)
- Things that aren't made of matter and don't follow the laws of physics—often discussed when asking whether consciousness or the soul might be something beyond the physical brain.
- explanatory gap(Central concept in anti-physicalist arguments)
- The alleged in-principle inability to intelligibly explain how consciousness arises from physical processes
- knowledge(Distinguished from mere true belief, which may be the product of indoctrination and need not exercise deliberative capacities.)
- Justified true belief — true belief that has been arrived at through the exercise of deliberative capacities, including comparison of and deliberation among alternatives.
- phenomenal concepts(Contrasted with physical concepts, which are theoretical (Loar 1999))
- Recognitional concepts that express the very properties they pick out.
- qualia(The passage presents two competing definitions to contrast the views)
- On the Cartesian picture: intrinsic qualities of inner ideas of which subjects are directly aware, necessarily shared by internal duplicates regardless of environment. On wide representationalism: representational contents of inner states whose nature is partly externally determined