This entry was published at least two years ago (originally posted on October 25, 2021). Since that time the information may have become outdated or my beliefs may have changed (in general, assume a more open and liberal current viewpoint). A fuller disclaimer is available.
The Muslimness of Dune: A Close Reading of “Appendix II: The Religion of Dune”: “Dune does not cheaply plagiarize from Muslim histories, ideas, and practices, but actively engages with them.”