Mr. Pipes began by emphasizing that he and Ms. Sultan are allies, fighting the same opponents, namely, the Islamists. They agree on the past and present of Islam but disagree about the future. Ms. Sultan argues it cannot change while he believes it can. The idea that Islam cannot change is an essentialist view that ignores how much Islam has changed over history, an aspect that he, as a student of Islamic history for forty years, appreciates. He stressed that many of the requirements of the Shari'a, or Muslim sacred law, are impractical to implement, resulting in what Mr. Pipes has coined as the "medieval synthesis," whereby loopholes are devised to get around impractical tenets, such as the prohibition against usury.
In the 1800s, with the onslaught of Western influence, the medieval synthesis collapsed, replaced by secular, reformist, and fundamentalist strains. The last of these is the totalitarian mentality that Mr. Pipes describes as "Islamism," which transformed the religion into a political movement. And while Islamism dominates today, there are even at this bleak moment signs that Islam itself can change. For example, jurists in Turkey recently ruled that women can pray next to men in mosques, a small but important step for women's rights.
Ms. Sultan began her argument by quoting Turkish Prime Minister Recep Tayyip Erdoğan, who says that there is no "moderate or immoderate Islam. There is Islam; that is it." She contends that terms like "radical Islam" conceal the true nature of Islam itself—a political ideology. She adds that the aim of Islam is to subdue the entire world under Shari'a. To prove her position, she quoted from the Qur'an; she also argued that the true nature of Islam can be seen in the Sira, or biography, of Muhammad, which, she says, has come to define Islam itself. For instance, Ms. Sultan claims that Muhammad's actions—such as marrying a 9-year-old and taking many women as concubines —means that there can be no equality for women under Shari'a.
During the question and answer session, Mr. Pipes pointed out that those who argue that Islam itself is the problem leave the West with no solutions, adding that, to truly reform Islam, Western governments must begin to empower genuine moderates. Asked what policies she would adopt toward the Muslim world, Ms. Sultan asserted that Islam can be reformed, and recommended Western pressure on the Saudi king as the surest way.
Mr. Pipes and Ms. Sultan agreed on some specifics, for instance, that Western governments must not welcome non-violent Islamism and should monitor the hate being taught in Muslim schools in the West. Overall, however, Mr. Pipes, while not denying what Islam has been or is, insists that Islam, like other religions, can and will change, whereas Ms. Sultan was more pessimistic.