Hume showed that one cannot infer cause & effect in nature by induction alone. We only notice that when event A occurs then so does event B.
If event A always occurs before event B we are still not entitled to say that event A causes event B. For night always follows day and we do not say that day causes night, but that it is caused by the spinning of the earth whilst orbiting the sun.
Is there any theoretical consideration that effectively distinguishes causality from regular occurance?