I do so love synchronicity. Or serendipity. Or simple coincidence, if you prefer. Now this is not to imply causality, oh no. Or fate or destiny working in mysterious ways. No way. It’s simply what two of the terms imply: two or more events where cause-and-effect doesn’t apply but which do occur at one and the same time. Or near enough. Nor is it anything amorphous, like morphic resonance — defined by Rupert Sheldrake as “a process whereby self-organising systems inherit a memory from previous similar systems”, a kind of collective memory palace — because the process that I want to discuss is one that not only has teased a lot of minds over millennia but which also most of us pick up like osmosis from our prevailing culture.