hello,
no matter the system, "defending oneself" involves a relationship between to mechanical agents.
sounds weird, neh?
it is, if you are trying to think of some system as the thing that is defending you.
let's back up a bit. what is a mechanical agent? glad you asked!
mechanical agent is a machine that can act within or upon it's environment (including other mechanical agents).
the human machine generally has the same arrangement of bones and joints as every other, so really, they all move roughly the same way. these mechanical agents are constructed in similar manner, so as to facilitate a finite number of possible interactions.
that said, a martial art system, rather than being the thing that defends the mechanical agent, is a method (framework of rules) in which the mechanical agent may explore interactive relationships with other mechanical agents.
there is nothing esoteric about this concept. karate, judo, arnis, savate, boxing, wing chun, tai chi... all of these are utilized by mechanical agents (human machines) that are constructed to move in similar manner with similar limitations.
a punch is a punch, not matter what you call it, or what rules framework you developed it in. a throw is a throw, etc etc...
the point is, only a training method (rules framework) can become obsolete.
back to karate. the outdated concept at work in this system/rules framework is the notion of relying on kata. kata are prearranged sequences of movements intended to simulate certain physical interactions.
kata are not USELESS, but relying on them as the primary training method IS USELESS.
when one mechanical agent engages another, for whatever reason, the situation is dynamic. nothing is prearranged. under certain circumstances, prearranged sequences can be a disaster.
kyokushin and seido sought to "fix" this by making a majority of their training involve live sparring. this is a step in the right direction, but due to a rules anomaly in competition, sparring became useless.
kyokushin competition disallows punching to the face and head. as time went on, players tend to stand directly in front on one another, hands low, raining blows to the midsection. hands are low (not blocking head punches) and inevitably, a kick knocks one of the players out.
this is unacceptable in self defense.
does this mean karate is useless in self defense? no. it means that EMPLOYING the mechanical agent (human machine) in a manner consistent with the system of karate (kata or flawed competition rules) is impractical for self defense.
if you have interest in karate, do for it. it's fun, it's hard and it's rewarding.
thanks