"But the week is man-made, arbitrary, a substance not found in nature." One thing that occasionally makes me wonder is the universality of the day of the week.

"But the week is man-made, arbitrary, a substance not found in nature." One thing that occasionally makes me wonder is the universality of the day of the week. Everywhere you go - with the possible exception of the people living on either sides of the imaginary International Date Line - people are in agreement on which day of the week it is. Just imagine the white Christian colonialist coming to Africa, or some other part of the world, and finding native Muslim populations and yet both agree on what day of the week it is.