You've all wondered

Go on, admit it, you've always wondered what your ideal water temperature is.

I've been reading a brilliant book today, didn't want to stop for dinner, but I had to. It's right up my alley, which is probably good since I'm reading it for my PhD. The Biggest Estate on Earth by Bill Gammage, all about how the Aboriginal people of Australia managed the land with controlled fire before the coming of the Europeans, how this created a particular landscape, the purposes of it, and the consequences of that ending. Super readable, very well-researched (had me at 'aerial photography'), and an area that isn't widely known about.