yes, "not every" event of course, but what about particular physical events. i guess it also goes to what level of causes you are examining...
>
>>But like most such systems that involve more
>>than a few entities, it is too hopelessly complicated to calculate.
>
> Any more concise way of saying "too hopelessly complicated to calculate"?
> The mathemeticians have already appropriated "chaos"
>
well perhaps you can steal some of their terminology and just say "NP hard" or something equivalent.
--ravi