I was planning to paint my boat today. There's already a coat of paint on it, drying. If I overpaint today, that's optimal. If I wait till tomorrow, then I'll have to sand it down first.

It looks like it might rain, but the forecast is good. I don't know what effect rain will have on newly applied paint, or indeed on the current partly dried surface.

Do I spend the afternoon painting the boat or carry on sitting in a coffee shop reading Less Wrong?