 A proposition was probable (probabilis) if specific indicators of truth justified assent (i.e., holding it true) or acceptance as a premise for  action.[4]  The main justifications for judgments of probability will be discussed in more detail in Section 3, on “Scholastic Concepts of Probability”. For the moment, it is enough to say that authority, testimony, a sufficient (but not maximal) appearance of truth, and frequent truth could buttress an ascription of probability.