casualbb said:
"don't block or cover, this reduces vision."
"evade blows by rolling, redirecting attacking energy" etc
Reduce vision towards one circumstance and overall you're survival goes down.. think in terms of multiple (skilled) opponents.
The motion to block and cover also breeds a lot of tension. Frankly, when you block and take a hit badly with the block it hurts a heck of a lot more than taking the hit well with a relaxed body. Well, maybe I shouldn't say that since I've never blocked with tension and I'm not so relaxed as to take anything past an amateur's punch.
Or maybe think from this perspective: By "cowering", you're being psychologically damaged. By staying relaxed and connected to the moment you're feeding your own confidence and instinct for survival.
Yeah, the evasion is tricky stuff at first, but wielding a kind of movement that never stops makes a practitioner a very difficult target. Even movement internally becomes a great last-resort.. being able to take a punch seems to be one of Systema's strongest assets.
You gotta be REALLY on the ball, cause you're not covering up. Say you screw up the evade -- wham, pummeled.
I totally see where you're coming from, and I'd bow to the wisdom of the obvious if I hadn't seen it for myself... think along these lines: If you punch me and I stand there, it'll hurt. What if I'm already moving away? The strike will probably mean less. It's a kind of generic safety measure that doesn't rely on the sorts of astounding reflexes and timing which specific blocks would.
Moving the body itself to absorb a hit is like that too.. when the body is relaxed and one's instincts are allowed to deal with the strike nicely, a strike means a lot less.
All that stuff is going on, all the while the Systema guy is continuing to move to get back into a good position again.. no motion is wasted.
My apologies.. I totally suck at groundwork, so it's tough for me to really describe things geared towards your perspective.