This work is divided into three main parts or chapters. Chapter I deals with the concepts of the basic entities with which historians are concerned. ‘Fact’ (something that is the case) is distinguished from ‘event’ (something that occurs or happens) and also from ‘interpretation’ or ‘theory’. ‘Event’ is delimited from ‘Situation’ (something which is changed by an event) as well as from ‘thing’ (something which is a situation) but it is shown that the differences between the three – as well as the deference between event and ‘superevents’ – is relative to the point of view adopted by the historian. Chapter II deals that the question of how the knowledge of simple historical fact (as opposed to connexions between facts) is acquired and valida...