 Burley uses the word “compossible” (compossibile). It is important to notice that at the time Burley was writing, the concept of consistency was not a standard part of technical logical language. He and his contemporaries did not speak about consistent sets of sentences, because they did not have the vocabulary. This seems like a simple reason why Burley never says directly and explicitly that all answers must stick to consistency. Instead, it seems more probable that building the concept was a part of the development in the obligational technique.