A human being is capable of taking in very few things at one time; we see only what is happening in front of us, here and now. Visualizing a simultaneous multiplicity of processes, however they may be interconnected, however they may complement one another, is beyond us. We experience this even with relatively simple phenomena. The fate of a single person can mean many things, the fate of several hundred is hard to encompass; but the history of thousands, millions, means essentially nothing at all.
