While the veracity of the second explanation can not be verified before a complete Islamic society is established, Feisal Khan points in regard to the first defense that it has been over twenty years (1993) since one critic (Timur Kuran) first highlighted the industry problems (the basic similarity of Islamic banking in practice to the conventional, the marginalizing of the equity-based, risk-sharing modes and embrace of short-term products and debt-like instruments), and since a supporter (Ausaf Ahmad) defended the industry as early in its transition from conventional banking.