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1 " the strangely elusive and counterintuitive character of the quantum world has encouraged some to suggest that the idea of entities like electrons which can be in unpicturable states such as superpositions of being ‘here’ and being ‘there’ is no more than a convenient manner of speaking which facilitates calculations, and that electrons themselves are not to be taken with ontological seriousness. The counterattack of the scientific realist appeals to intelligibility as the key to reality. It is precisely because the assumption of the existence of electrons allows us to understand a vast range of directly accessible phenomena—such as the periodic table in chemistry, the phenomenon of superconductivity at low temperatures and the behaviour of devices such as the laser—that we take their existence seriously. "
― John C. Polkinghorne , Science and Religion in Quest of Truth
2 " scientific discovery requires the boldness of provisional commitment to a point of view, while remaining aware that this may require subsequent modification in the light of further experience. "