Different degrees of complexity of thought (technique) and speed.
What? Nope, that's not any clearer, Alex. Your original comment was "
In such, each style is like a different form of thinking, expressed through physical means. I do not think there is any better style of thought, just different speeds and degrees."
Dude, this just doesn't make any sense. It's a collection of words that don't say anything.
Tell you what, try to simplify your language. Say what you mean in the plainest language you can. Let's see if we can make any sense of this, yeah?
JKD can be utilized as a philosophy and mindset by any style. Choose that which best works for you, and modify your perspective of it using JKD tenets.
You know, I'm going to pull the "how would you know?" card out here... you've verified that you don't actually have any experience in JKD at all, you've never trained in it, at best you've read some Bruce Lee books from the looks of things. Do you think it's possible that you've completely misunderstood the central tenets of JKD yourself? Honestly, that's what I'd say from your comments.
I'll explain.
While JKD does endorse cross-training and exploration of multiple sources to discover what you can personally adapt to your own application, it doesn't then follow that no matter what art you're doing you can make it JKD. JKD is it's own training approach, separate to any and all other systems, so your comment is, frankly, completely wrong.
A tenet is any held belief which guides one to act, and think within a specific mindframe and context, to me.
Did you read what you were answering, Alex? There wasn't a question of what tenets were (tenants, maybe...), there was a question of why you would think that JKD's tenets would be "practical and possible" as opposed to any other arts...
It's not about liking it. If a specific move you have been taught, for you, routinely gets you kicked in the face, or anywhere undesirable, or plain doesn't work... why, according to JKD, should you keep it?
First off, the most recent thing that I can see where there is a technique where someone would get repeatedly kicked in the face was demonstrated by you... but really, I'd be hard pressed to think of much in any legit martial art that would have remained in a system that fits your description. When you deal with some of the arts that I do, it's pretty simple... the arts teachings are only around now because of the bloodshed that they grew from. If there were techniques that saw the practitioners getting "kicked in the face", the art would have died long ago. I mean, realistically each and every martial art is designed specifically to generate success in a particular environment, so the likelihood is more that a particular technique is being applied in the wrong situation.
What this really means, though, is that there is no "according to JKD" as anything special here... pretty much all martial arts only have techniques that work (in their context), and will not keep something that doesn't. If you can't make it work, it might not be a fault of the technique. It might be that you don't understand it, you are applying it in the wrong context, or that you don't possess the talents or personal attributes to use it. That's fine... but deciding you do, or don't want to include a particular technique from your system into your regular repertoire doesn't mean that you are following JKD. The only way you are following JKD is if you are training in JKD, which is very different to everything you have discussed so far.
Loooooot of moves I like. Heck, most in MA. But that doesn't mean I use them all for sparring, or even survival.
Here's the thing, Alex. You think of martial arts as "moves". And really, "most in MA"? How many is that?
You don't have to, but if they work, than either way you are following a concept of JKD in keeping what works, for you.
No, Alex, you are only following a concept of JKD if you are training in JKD. You may have a similar approach or concept in your own training, but that doesn't make it JKD. At all.
Not to appear to be jumping on those who adhere to the teachings of Bruce Lee, but how is someone to practice JKD in any sense without already being extremely knowledgeable in MA? What I mean is, the whole discard what is useless and absorb what is useful; how is any beginner to know what is of any use to him as in many systems important lessons are hid in teaching forms that don't resemble actual combat or may be counter intuitive to what one thinks they should do during a fight?
Can JKD as a concept be practiced only by those who have trained extensively in one or more arts?
I get what you mean, but there might need to be some clearing up. While JKD is taught as a conceptual training methodology in many cases, in practical terms, the senior instructors of it have fairly solid bases in one or another form of martial art, which is what they then base their exploration of JKD on. And that comes from the way the system developed, really. As a result, JKD (as taught today) doesn't require the new student to be training in multiple arts, as the seniors have already done that for them. And really, it's not advisable either. The original seniors didn't train twenty things at once, they trained in one, and once they had a solid base in that, they could then expand their training to include other things.