How do we know what we know? Descartes started the whole debate questioning the certainty of what we accept without challenging its veracity.
He was attempting to strip back our understanding of what we know and discard everything else.
That old adage ‘cogito ergo sum’ was Descartes’ catchphrase. He doubted everything presented to his senses as unreliable. He also put forward the idea of a malevolent magician who could be trying to track us.
I liked that speech made by Donald Rumsfeld in 2002 about the known knowns and the known unknowns with a warning about the unknown unknowns.
Taxi drivers in London do the knowledge, a test of their familiarity with London streets. They might be asked by the examiner how they would get from the Albert Hall to Alexandra Palace or Hampton Court to Greenwich Maritime Museum. Remembering those routes isn’t easy and many hours are spent on scooters memorising one way streets and cu.l-de-sacs
Unknown
odespinner 