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effect that hypothesis, if embraced, must
have in modifying our expectations
in regard to future experience. Thereupon
we make experiments, or quasi-experiments,
in order to find out how far these new
conditional expectations are going to be
fulfilled. In so far as they greatly modify
our former expectations of experience
and in so far as we find them, nevertheless,
to be fulfilled, we accord to the hypothesis
a due weight in determining all our
future conduct and thought. It is true
that the observed conformity of the facts to the
requirements of the hypothesis may have
been fortuitous. But if so, we have only to