  The hypothetical status of all physical theories is underscored also in Some Thoughts Concerning Education: “The systems of natural philosophy…are to be read, more to know the hypotheses…than with hopes to gain thereby a comprehensive, scientifical, and satisfactory knowledge of the works of nature.”(Locke, quoted in Rogers 1982, p. 230.) But even though all physical theories ultimately be hypotheses, it is useful to bear in mind Peter Anstey’s remarks about the genesis of the corpuscular hypothesis.  Although the hypothesis originated among theorists championing an experimental method over a purely speculative one, that should not seem so ironic in light of the following. Instead of excluding speculation entirely, these theorists allowed it, so long as it played a limited and secondary role, by waiting to begin until observation and experiment had already established a solid foundation.  Furthermore, the corpuscular hypothesis had credibility among hypotheses, insofar as it adhered to their prohibition against questions they thought could never be answered experimentally, by avoiding the question about matter’s infinite divisibility.(See Anstey, 2011, pp. 4–5.)  