This semester, I am taking a course for my retirement PhD project titled “Groundwater Modeling through Time Series Analysis.” It is only a one-credit “Special Topics” class, but it looks very interesting and a good way to get my feet wet back in the (remote) classroom. The course is to be taught by my PhD adviser, Troy and one of his compatriots in Brazil. There will be a sum total of three lecture sessions and three working sessions to do projects with a software package called HydroSight. The material looks great, but the program depends on the MatLab runtime so that did not please me. Anything that depends on the MatLab runtime is a disaster and a tragedy, but that is a rant for another day. I am really looking forward to the course. It starts on Tuesday and I have permission from my day job to sit in on the class in the middle of the day.