Dreams Versus Reality: Plenary Debate Session on Quantum Computing

"First published in abridged form in Quantum Information Processing, 2 2003, pp. 449-472. Also, in its extended form this debate was first published as a chapter in the book Quantum Aspects of Life, Eds. D. Abbott, P. C. W. Davies, and A. Pati, Publ. Imperial College Press, London, 2008."