I understand what you are saying, but regardless of the interpretation
of the forecast, why does the weatherman not tell us that we have a 70%
chance of rain over the weekend if there is a 50% chance on Saturday,
and a 40% chance on Sunday? It seems, if the standards rules of
probability apply to weather forecasts, that this would greatly enhance
weather reports, but since it is done I suspect there is a reason
beyond what my little mind can see. Or maybe it would just be
confusing to the general audience if they said the chance was 50% Sat,
40% Sun, and the accumulated percentage would be 70% for the weekend.
What's the answer?