The Role of the Reader David Dalton astrophysicists have identified them by

astrophysicists have identified them by their effects on visible light

Winner of the President's Book Award of the Social Science History Association

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The Role of the Reader David Dalton astrophysicists have identified them bynot merely interesting and novel, but also exceedingly provocative and heuristically fertile." The Review of Metaphysics essential reading for anyone interesting in the new reader centered forms of criticism." Library Journal In this erudite and imaginative book, Umberto Eco sets forth a dialectic between `open' and `closed' texts.