Lel
I already said Ccr is a reasonable tool, just like sm. But I think one needs to know how to tech dive before diving a rebreather (any rebreather). I also really respect that the guys are diving the crap out of the JJ and doing a thorough analysis through the beta courses and real life diving before releasing the course. Way better than what Utd went through a number of years ago with the mx rebreather stuff.
So, what classes have you taken? You're the one that snapped back telling me you've taken gue courses. I was just curious as to which ones. If it's just fundies, then let's go ahead and conced that you're probably not 100% what the deal is in tech 1 or 2. If it was super easy, everyone who took it would pass (they are fundies grads, after all), but they don't.