  Another insight Weyl gave us on the nature of electricity is  topological in character and dates from 1924. We still do not know  how to assess it properly or how to fit it into the scheme of  physics, although with each passing decade it receives more  attention. The idea is simple. Wormholes thread through space as air  channels through Swiss cheese. Electricity is not electricity.  Electricity is electric lines of force trapped in the topology of  space.