Comparable socioreligious pressures independently produced similar manuscript genres

Evidence

The umbatri is not identical to the Morisco “miscellaneous” volumes. The Sudanese do not seem to anthologize entertaining narrative passages in the way that the Moriscos did, for example. And the Morisco books were often quite well bound, not left in loose-leaf form. But there are very many points of similarity. One must presume that similar pressures have led to similar outcomes in two very different places. — L. P. Harvey, Muslims in Spain, 1500 to 1614, 713

Categorization

• XREF: A clean cross-domain instance of convergent cultural evolution — the same logic that drives convergent evolution in biology and homoplasy in material culture.
• STORYSTEM: The string-bound loose-leaf sacred book carried wrapped in cloth, assembled by a single hand over a lifetime, is a vivid material-object seed for a story about inherited knowledge and its practical magical use.