The yawninggap in neuroscientists’ understanding of their topic is in the intermediatescale of the brain’s anatomy. Science has a passableknowledge of how individualnerve cells, known as neurons, work. It also knows which visiblelobes and ganglia of the braindo what. But how the neurons are organised in these lobes and gangliaremainsobscure. Yet this is the level of organisation that does the actual thinking—and is, presumably, the seat of consciousness.