It is either hoping for momentary Luck. Or playing the long term statistical averages. Statistically, the greater the number of attempts at something, the more likely an anomalous result will eventually occur.
Luck is definitely observable in daily life; those who do not see it have turned a blind eye to it. Anyone can get lucky any time. Maybe this time it will be me.
All this is true of non-human interactions. With human interactions it is even more so.