Maybe we better not go too deeply into that, after all look who we elect. But now for people too dumb to come in out of the rain, and umbrella that tells you that it's raining. Invented in England where people carry umbrellas as a matter of course, you wouldn't think that a warning would be necessary. Still I suppose you could check the bluetooth enabled device to see if the day was predicted to be one of the rare ones on which it wasn't supposed to rain so you could go about your business outdoors with a superior look on your face at being one of the few who isn't carrying an unneeded umbrella on a clear day.
Of course the predictions are based on the National Weather Service data and we know that's never wrong don't we?