Or no? You guys are good with DEs? I mean would we say PF has a strong presence in DEs? Most members good at them? Or are they formidable to lots of people? Anyway, DEs are the language of science, of physics, of biology, and the stars. Would make sense to get good at them if you want to understand what's going on in the Universe. And of course since I'm suggesting it, I would excuse myself from the group of contenders not like I'm good enough anyway but in case.