I'm going to start the "Journal of Hot Tub Studies." It will feature seminal papers on topics such as: "are all conversations really better in a hot tub?" and "what types of wine glasses float?"
For the conversation question we will need a control. I was thinking we could use identical twins & have the same conversation with one in the hot tub, the other later out of the hot tub. But then Simone suggested just having a conversation with someone in the hot tub, then introducing amnesia. Chloroform? Roofies? Hit them on the head with a hammer? But then you'd have to give them an asprin or else there's a new non-hot tub related factor influencing whether or not they enjoy the next conversation with you.
Does this make any sense? I'm tired.