…But clearly we do end up with causal knowledge, as Hume himself never doubted, and we manage to navigate our ways through a steady world of enduring objects. We somehow end up with knowledge of an objective world. And we don’t remember that arriving at such knowledge was all that difficult. We just sort of grew into it, and now it seems so natural that it’s really hard to imagine not having it, and it’s even difficult not to find such knowledge perfectly obvious. But in fact it is anything but obvious …

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