Quantum Reality (Doubleday, 1985). A highly readable set of interviews with some of the key players in the development of quantum physics (originally produced as a BBC Radio 3 documentary) is P. C. W. Davies and J. R. Brown’s

The Ghost in the Atom (Cambridge University Press, 1986).

For an account of the buckyball, see Markus Arndt et al., 'Wave- Particle Duality of C60 Molecules’,

Nature,

401 (1999): 680-2.

The experiment involving the metal strip is described in A. D. O’Connell et al., 'Quantum Ground State and Single-Phonon Control of a Mechanical Resonator’,

Nature,

464 (2010): 697-703.

Eugene Wigner’s remarks on the role of consciousness in quantum measurement can be found in his 'Remarks on the Mind-Body Question’, included in a collection of essays entitled

Symmetries and Reflections (Indiana University Press, 1967), pp. 171-84. More details on the case of 'Wigner’s friend’, an interesting variant of the thought experiment involving Schrödinger’s cat, can be found in chapter 7 of Paul Davies,

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