 In line with his account of the nature of universals, Marsilius rejected simple supposition. Logicians such as Peter of Spain had used the notion to indicate that a term stood not for an individual but for a universal or common nature in the external world, like the term ‘man’ in the proposition, ‘Man is a species’. Since Marsilius rejected the idea of universals existing outside the mind, he eliminated simple supposition from the list of different types of supposition. He was critical of some of his contemporaries (e.g., Albert of Saxony) who likewise dismissed the concept of real universals, yet kept on using the notion of simple supposition. They had changed the meaning of the term, he said, by claiming that a written or spoken term had simple supposition if it was used to refer to a concept in the human mind. Marsilius wondered whether young students would be able to understand this new meaning of simple supposition, since they would hardly know what concepts are. To avoid confusion, Marsilius decided not to deal with simple supposition at all in his  logic.[6]