In a recent article in the Guardian entitled ‘Quantum Weirdness: What we call ‘reality’ is just a state of mind’, quantum physicist and winner of the 2009 Templeton prize Bernard d’Espagnat argues against the commonsense view, championed by realist philosophers, that reality is objective and importantly independent of our thinking about it. ( See: http://www.guardian.co.uk/science/blog/2009/mar/17/templeton-quantum-entanglement). Like many before him d’Espagnat appeals to some of the findings of quantum mechanics, which appear to defy commonsense, to support his case. In particular, he appeals to the phenomenon of quantum entanglement, under which particles that have interacted with one another remain importantly connected to one another even when far apart. D’Espagnat points out that this phenomenon has important consequences for our conception of space and time. Somehow he seems to think that it is also important for debates about realism in general and not just to debates about the nature of space and time, although he does not explain why this is the case. According to him:
This reality is something that, while not a purely mind-made construct as radical idealism would have it, can be but the picture our mind forces us to form of … Of what ? The only answer I am able to provide is that underlying this empirical reality is a mysterious, non-conceptualisable "ultimate reality", not embedded in space and (presumably) not in time either.
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