however, need to consider the possibility that the degrees of internalization of these religious ideas by diverse social members during the prehispanic period may have been quite different from those after the Spanish conquest, when a stark opposition to Christianity and the colonial regime forced indigenous agents to consciously commit themselves to certain versions of religious propositions. We need to consider the possibility that meanings of religious acts in prehispanic Mesoamerica may have been highly fluid, diverse, incoherent, and polysemic. I do agree that different narratives and practices in the lower Río Verde Valley and the Valley of Oaxaca that Joyce and Barber discuss are important factors affecting the divergent trajectories of these regions. But at the same time, I suspect that the degree and way of standardization and the coexisting diversity and incoherence within individual communities may be equally important aspects that conditioned courses of social change. This nature of standardization and diversity deserves further inquiry. I would like to add that the Terminal Formative was a time of significant social change not only in Oaxaca but also in other parts of Mesoamerica. At the onset of this period, Teotihuacan became a powerful center in central Mexico, and in southern Mesoamerica, many centers, including El Mirador, Kaminaljuyu, and Takalik Abaj, accelerated the process of political centralization. The end of the Terminal Formative was marked by political disintegration, as Joyce and Barber describe for the lower Río Verde Valley. While Teotihuacan and Monte Albán continued to prosper, many centers in southern Mesoamerica, such as El Mirador and Kaminaljuyu, collapsed. We need to examine whether shared religious or other social practices affected these patterns or whether external factors, such as climate change, played a more important role. Our understanding of Mesoamerican religions is still limited, and their diverse aspects and their relations to social processes need to be further examined. This stimulating article by Joyce and Barber represents an important step in this regard and encourages us to explore this critical issue.