As regards facts falling within the present,
if they can be detected by the eye without any
reference to their logical antecedents being required,
there will be no need of conjecture: let us suppose,
for instance, that the Lacedaemonians are enquiring
whether the Athenians are erecting fortifications.
But although conjecture may seem entirely foreign
to this class of question, there are cases in which it
it necessary, as in questions of personal identity,
which may be illustrated by the action brought
against the heirs of Urbinia,1
where the question
was whether the man who claimed the property as
being the son of the deceased, was Figulus or Sosipater.