Final day of the meeting! The opening session was on black holes, and I learned some interesting things about black hole entropy (which I've mentioned before). One of the presenters, Raphael Bousso, emphasized that "This is how we do physics in the US – We have collaborators all over the world," and showed this slide of his colleagues:
Physics is the process of describing more and more phenomena with fewer and fewer laws.
Put tea in the fridge, it cools down, while the fridge releases heat and increases entropy. Same thing happens when you throw the tea in a black holeI went by the "Contact Congress" booth and sent a copy of the APS letter to my congresspeople – I'm not sure how much effect it will have, since they're all Democrats, but at least they know we're behind them.
I gave my talk in the final session of the day, and it went great! I got some nice suggestions for future directions from the crowd. In the same session, someone spoke on using machine learning to identify "chirp" signals in LIGO. He opened by saying, "Machine learning is not just a plot by Amazon and Google to take over the world. It's also a data analysis technique."
I had a great time out here, and learned a lot, but I'll be glad to head back to Michigan tomorrow and get back to work on my PhD!