 However, on closer scrutiny, this hypothesis fails to receive historical and textual confirmation. (Green-Pedersen 1984, chapter E in particular) is (still) the most comprehensive study on this subject, covering virtually every text known to us that is relevant for the hypothesis. Green-Pedersen argues (1984, 270) that the late 13th century literature on the Topics, that is, the period immediately preceding the emergence of treatises on consequences, gives absolutely no indication of what was to come. In other words, there are no significant similarities between the contents of these 13th century treatises on the Topics and the 14th century treatises on consequences. Therefore, we may conclude that the Topics could not have been the main, and in any case certainly not the only, source for the emergence of 14th century theories of consequences.