In the centuries preceding Averroes, there had been a debate between Muslim thinkers questioning whether the world was created at a specific moment in time or whether it has always existed. Neo-Platonic philosophers such as Al-Farabi and Avicenna argued the world has always existed. This view was criticized by the mutakallimin (philosophers and theologians) of the Ashʾari tradition; in particular, al-Ghazali wrote an extensive refutation of the pre-eternity doctrine in his The Incoherence of the Philosophers and accused the Neoplatonists of unbelief (kufr).