The author argues that is not obvious what it means for our beliefs and assertions to be "truth-directed," and that we need to weaken our ordinary notion of a belief if we are to deal with radical scepticism without surrendering to idealism. Topics examined also include whether there could be alien conceptual schemes and what might happen to us if we abandoned genuine belief in place of mere pragmatic acceptance. A radically new "ecological" model of knowledge is defended.

This book argues that it is not obvious what we means by saying our beliefs and assertions are 'truth-directed'. Do we weaken our notion of a belief if we deal with radical scepticism without surrendering to idealism? This book defends a radically new 'ecological' model of knowledge, examining what might happen if we abandoned genuine belief.