 However, he attacked the use of astrology to choose the timing of actions (so-called interrogation and election) as wholly false, and rejected the determination of human action by the stars on grounds of free will.The friar Laurens Pignon (c. 1368–1449) similarly rejected all forms of divination and determinism, including by the stars, in his 1411 "Contre les Devineurs".This was in opposition to the tradition carried by the Arab astronomer Albumasar (787-886) whose "Introductorium in Astronomiam" and "De Magnis Coniunctionibus" argued the view that both individual actions and larger scale history are determined by the stars.