Had a bit of an intestinal interlude last night. It was not unexpected. My experience living in Hungary, Spain and now Chile is that it takes a bit of time to get used to the water. In each of these places, I drank the tap water regularly. In each place, after about two weeks, I went through some kind of intestinal distress. Last night was my Chilean turn. It was rough. I didn't sleep much. Hopefully, now I'm adapted to the water.
I worked again most of the day reading a paper on matching "nearby" bipartite graphs. It's nice having the beach right out the back door. When I've been sitting (or when working in the bedroom, lying) too long, I can just get up and walk along the beach for a few minutes. It really clears your head.
Walked to the Mall Marina this evening to get a couple of things. We passed this giant sundial along the beach.
Fun thing about sundials in the southern hemisphere is that they go counterclockwise, i.e. the opposite direction of sundials in the northern hemisphere.