I agree the scheduling makes it difficult. I'm doing the NLP class right now, and scheduled to start the PGM class in a couple of weeks. I'm worried about the overlap, but I'll make it work out.

But I also wanted to do the Scala course. I didn't start it because I know I'd not be able to keep up with all three when they overlapped for a few weeks. It's a shame, but I had to prioritize.