This reliance on positional authority explains some characteristics in parts of the Muslim world that confound many Westerners, such as the continued practices of honor killings, child brides of six or younger, and blood feuds. For one reason or another, the prevailing sources of social authority in these regions deem these customs acceptable, perhaps even preferable. No amount of sheer reason is going to change these practices, nor will externally imposed prohibitions. The change will have to be social, internal, and organic.