1) Can inductive inferences be justifiable?
2) Is Transcendental Idealism a justifiable position?
3) Can perceptual experience consist only of passively received sense impressions?
4) Does a Kantian position provide a successful antidote or answer to Descartes scepticism?
5) Does Kants theory of the transcendental unity of apperception constitute an advance on Descartes conception of the mind and Humes theory of the self?