It's very important to realise that
when you have 2 different relations (a,b)
R
(c,d)
S this does
not establish a
correlation between a &
c,
& b &
d,
or a &
d,
& b &
c: there is no correlation
whatsoever thus established. Of course, in the case of 2
pairs of terms united by
the same relation, there
is a correlation. This shews that the theory which held
that a relational fact contained the terms & relations united
by a
copula (ε
2) is
untrue; for if this were so there would be a
correspondence between the terms of different
relations.