hmm, in my own opinion, there are luck and miracles
luck defines events which has a slim chance of happening and is beneficial to the person referring to it as luck, also not expected by most people.
miracle on the other hand is just what you call extremely rare events that you don't expect to happen, what you call the impossible, and cannot be explained. if it can be explained, it's not gonna be called miracle.
imagine yourself living in the past, where there is no medicine, and your tribe suddenly caught a sickness you no one can heal, many of your tribesmen die, suddenly one of you develops a natural immunity to the sickness, what would you call that event? even if the sickness is just fever?
NOTE: while imagining this situation, also think that you do not know what fever is or what medicine is. in other word, your a primate.
