Laplace rocks. Topped only by the Fourier Transform. For years my brain lived in the the frequency spectrum. I miss that.
Speaking of things I miss, I just watched the documentary
John Lee Hooker: That's My Story. Not the best documentary. But JLH is so badass cool. Lots of scenes of him in San Francisco, where he spent the last 30 years of his life. We should have made him honorary mayor. I miss that guy around town.