kant

Hume argued that we can never see one event cause another, but only the constant conjunction of events. Kant suggests that Hume was confusing the phenomenal and noumenal worlds. Since we are autonomous, Kant now claims that we can know something about the noumenal world, namely that we are in it and play a causal role in it. This knowledge, however, is only practical and not theoretical. Therefore it does not effect our knowledge of the things in themselves. Metaphysical speculation on the noumenal world is avoided.

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