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which case the probabilities of the first event
are determined, and are determined not
to be equally possible. In short, if you are
going to make any assumption of equal
possibility,— which I hold to be altogether
unwarranted,— you ought at least to
adopt some self-consistent principle in
doing so. Now there is only one self-consistent
principle on which such assumptions can
be made; and that is that what Boole called
the different constitutions of the universe are
equally possible.

In making up the contents of the box of
toys, the first toy put in might be
dutiable D or free F. Then the