Eckard,
Yes, there are many causes to any event. The conversation thread, in which you commented, had been about determinism vs. probability:
"We can't know what all past events will affect current ones, until the affected events actually happen. All the laws deciding what happens may be entirely deterministic, or they wouldn't be laws, but there is no way to know all input, ie, from prior events, before the event in question happens. For the simple reason that the lightcone of input isn't complete until the event happens. So in order to know all potential cause, prior to effect, you would need superluminal signaling, but if such a possibility existed, then it might also provide input into that event, thus needing even faster signaling, and the problem repeats.
Therefore that which has not yet occurred is probabilistic, as all input cannot be known, while all factors have been factored in what has occurred, making it determined."
Tom didn't agree, but that's to be expected.