Answer
Jean-François Lyotard, a prominent postmodern philosopher, is renowned for his analysis of epistemology and communication. Central to his work is the concept of "differend," suggesting instances where a conflict arises due to the incommensurability of language games or frameworks. Lyotard argues that grand narratives, such as those found in traditional philosophical or scientific discourses, are no longer adequate in understanding the complexities of knowledge and communication in a postmodern world.