And yet . . . Even men in the most trying of circumstances—like those lost at sea or confined to prison—will find the means to carefully account the passing of a year. Despite the fact that all the splendid modulations of the seasons and those colorful festivities that recur in the course of normal life have been replaced by a tyranny of indistinguishable days, the men in such situations will carve their 365 notches into a piece of wood or scratch them into the walls of their cell.

