After the "Satanic Verses" controversy developed, some scholars familiar with the book and the whole of Rushdie's work, like M. D. Fletcher, saw the reaction as ironic. Fletcher wrote "It is perhaps a relevant irony that some of the major expressions of hostility toward Rushdie came from those about whom and (in some sense) for whom he wrote." He said the manifestations of the controversy in Britain "embodied an anger arising in part from the frustrations of the migrant experience and generally reflected failures of multicultural integration, both significant Rushdie themes. Clearly, Rushdie's interests centrally include explorations of how migration heightens one's awareness that perceptions of reality are relative and fragile, and of the nature of religious faith and revelation, not to mention the political manipulation of religion. Rushdie's own assumptions about the importance of literature parallel in the literal value accorded the written word in Islamic tradition to some degree. But Rushdie seems to have assumed that diverse communities and cultures share some degree of common moral ground on the basis of which dialogue can be pieced together, and it is perhaps for this reason that he underestimated the implacable nature of the hostility evoked by "The Satanic Verses", even though a major theme of that novel is the dangerous nature of closed, absolutist belief systems."