and the establishment of the changes thereby generated,
with regard to the _*effect_,--i. e.: the critical interpretation of the
material in hand. Applied to a case, the problem presents itself
in this wise: I consider each detail of evidence by itself and cleared
of all others, and I vary it as often as it is objectively possible to do
so. Thus I suppose that each statement of the witness might be a
lie, entirely or in part; it might be incorrect observation, false
inference, etc.--and then I ask myself: Does the evidence of guilt,
the establishment of an especial trial, now remain just? If not, is
it just under other and related possible circumstances? Am I in
possession of these circumstances? If now the degree of apparent
truth is so far tested that these variations may enter and the accusation
still remain just, the defendant is convicted: but only under
these circumstances.

The same procedure here required for the conduct of a complete
trial, is to be followed also, in miniature, in the production
of particulars of evidence. Let us again construe an instance.

The _*effect_ now is the establishment of the objective correctness
of some particular point (made by statements of witnesses, looks,
etc.). The _*complex of conditions_ consists in the collection of these
influences which might render doubtful the correctness--i. e.,
dishonesty of witnesses, defective examination of locality, unreliability
of the object, ignorance of experts, etc. It is necessary
to know clearly which of these influences might be potent in the
case in hand, and to what degree. The _*standardization_ consists,
also this time, in the comparison of the conditions of the present
case with those of other cases. The _*variation_, again, consists in the
abstraction from the evidence of those details which might possibly