I was wondering how useful a course in basic stochastic processes is if you want to pursue a career in physics? And especially for a theoretical physicist or astronomer. Im going to have to choose two courses next semester and I think I'm going to choose Special relativity and Mathematical physics. Since I don't think I can handle all three at the same time I was wondering if I should read Stochastic processes on my own over the summer, but I would like to know if it's useful first. I know it's hard to answer without knowing exactly what's in the course but just some opinions would be nice.