I once asked
daisy_knotwise whether rain puts humidity into the air or takes it out. I asked
daisy_knotwise because she has a degree in meteorology, though unfortunately she discovered that such a thing wasn't very useful to anyone who didn't want to be a tv weatherperson. She answered my question in reasonable depth at reasonable length for the time and place I asked. Though at the time I genuinely listened to what she was saying, because I had been expecting (well, wanting) an either/or answer I only really retained that the answer was depends.