It is almost axiomatic that large-scale types will be modified if not refuted as the complexities of local-level processes and variations are taken into account.

The Mandans are certainly a very interesting and pleasing people in their personal appearance and manners; differing in many respects, both in looks and customs, from all other tribes which I have seen. They are not a warlike people; for they seldom, if ever, carry war into their enemies' country; but when invaded, shew their valour and courage to be equal to that of any people on earth. Being a small tribe, and unable to contend on the wide prairies with the Sioux and other roaming tribes, who are ten times more numerous, they have very judiciously located themselves in a permanent village, which is strongly fortified, and ensures their preservation. By this means they have advanced further in the arts of manufacture; have supplied their lodges more abundantly with the comforts, and even luxuries of life, than any Indian nation I know of.