Gorgeous first two-thirds of the Labor Day weekend, which I spent geocaching, up to the point where my knee started complaining about all the hiking. Off-trail bushwhacking seems to be the main irritant, along with hilly trails, and i was doing a lot of that on Sunday. The knee seems to wait until I’ve maximized the distance back to the car before starting to hurt, and this time was no exception. So I’m back in front of a computer screen, digging up interesting (to me) science stuff, and sorting through my slo-mo movies, getting things ready to go.