important only where the issue involves partly-concealed observations,
conclusions and judgments. In such cases another factor
enters--conceit; what the witness asserts he is fairly certain of
just because he asserts it, and all the ``I believes,'' ``Perhapses,''
and ``It seemeds,'' are merely insurance against all accidents.

Generally statements are made without such reservations and,
even if the matter is not long certain, with full assurance. What
thus holds of the daily life, holds also, and more intensely, of court-
witnesses, particularly in crucial matters. Anybody experienced
in their conduct comes to be absolutely convinced that witnesses
do not know what they know. A series of assertions are made
with utter certainty. Yet when these are successively subjected to
closer examinations, tested for their ground and source, only a very
small portion can be retained unaltered. Of course, one may here
overshoot the mark. It often happens, even in the routine of daily
life, that a man may be made to feel shaky in his most absolute
convictions, by means of an energetic attack and searching questions.
Conscientious and sanguine people are particularly easy subjects
of such doubts. Somebody narrates an event; questioning begins
as to the indubitability of the fact, as to the exclusion of possible
deception; the narrator becomes uncertain, he recalls that, because
of a lively imagination, he has already believed himself to have
seen things otherwise than they actually were, and finally he admits
that the matter might probably have been different. During trials
this is still more frequent. The circumstance of being in court of
itself excites most people; the consciousness that one's statement is,
or may be, of great significance increases the excitement; and the
authoritative character of the official subdues very many people
to conform their opinions to his. What wonder then, that however