it does feel like quite the coincidence that 2 seems like the magic number and we do, in fact, have two hemispheres. i doubt that the processing for any of these tasks falls strictly down the left vs right hemisphere, but i do kind of feel like our consciousness is kinda built on having a sort of internal tick-tock cycle, and we do certain kinds of thinking on tick and others on tock. but that is just armchair introspective dilettante neuroscience-- not to be confused with the actual thing.