I'm a hostage of the weather forecast. Take yesterday as an example. A friend and I had plans to go hiking, but kept delaying due to the looming predictions of rain. It ended up being a mild overcast day with occasional breaks of sun. It was another perfect day ruined by the forecast. How do meteorologists sleep at night? They get it wrong day after day!

Here is a puzzle. Say there is an 80% chance of rain but a 0% chance they are right. What is the chance of rain?