Here's the link to a very interesting article that a friend of mine put me onto that Sam Harris wrote about understanding BJJ. He touches on a couple of concepts which Renzo Gracie puts forth in his book "Mastering Jiu Jitsu" about the ability to train at full, live pace compared to constant scaling of speed and power.

http://www.samharris.org/blog/item/the-pleasures-of-drowning

The best insights are in his paragraph that details his analogy of learning jits and drowning. Pure gold. Enjoy.

Nice article. I always point out to my students that the ability to punch and kick effectively should not be overlooked. However, I liken the skill to a gun that may or may not shoot or a Knife that may or may not cut. That is to say, it may be effective or it may not. In the military we would have called such a weapon system ineffective and useless. What would be the point of carrying an M-16 that might shoot someone when I pulled the trigger, but also might not?! Physics, however, do not change. And BJJ focuses on the science of biomechanics. It always works. The only way to beat it...is to learn it.

Nice article, thanks for sharing.