  Moreover, Ibn Daud makes use of a fourfold division of causes that he found in Halevi (Kuzari V.20): besides necessary causes that God knows as necessary, there are natural and incidental causes that are entrusted to secondary causes. The fourth category consists of free causes or “causes due to choice”, thanks to which man is free to choose between good and evil. In other words, God has no foreknowledge as regards human action. This rather drastic conclusion is quite unusual in Jewish philosophy; prior to Ibn Daud no Jewish philosopher was prepared to limit God’s knowledge to save the notion of free will. In Ibn Daud’s view, however, this position does not involve ignorance in God.