Synchronicity is the coming together of inner and outer events in a way that cannot be explained by cause and effect and that is meaningful to the observer.
effectquotes
Under presupposition of free will each human action would be an inexplicable miracle – an effect without cause. And if one dares the attempt to make such a liberum arbitrium indifferentiae imaginable to oneself, one will soon become aware that here the understanding quite genuinely comes to a standstill: it has no form for thinking of such a thing.
No rational argument will have a rational effect on a man who does not want to adopt a rational attitude.