I've heard it been said that, "Jun Fan is the car and JKD is the journey."
I found this interesting and I think a clear way to explain things. I think reflecting on my own early experience helped clarify it for me:
1. You start in one art (for myself it was TKD) and train hard, earn black belt, etc. continue training.
2. My parents told me about Kali and Filipino martial arts in general, so I started training in that, seeing that there were aspects in which it seemed more "efficient" than TKD. So I was cross-training. There were a few techniques/concepts I liked from both, so I kept training in both. I also realized I was still very new at this, so I kept trying to learn.
3. A few years of this goes by...in the mean time I meet a bunch of people from different arts, Wing Chun, Muay Thai, several styles of kung fu, and I begin to train/spar with them in college. In the meantime, I meet another Kali instructor when I moved and start training with him. I found through these experiences that certain ways of doing things were even better than what I had been doing...e.g. I adapted my TKD round kick to more of a muay thai kick (particularly after holding the thai pads against an MT guy).
4. It's been 3-4 years of training and I meet a wrestler and foolishly talk about how wrestlers can't do any grappling because of my stand-up skill. He then proceeds to execute a double-leg and have me whimpering in a scarf hold until I tell him that he's made his point. At this point in my journey I didn't take up grappling, but I worked out with him to teach me how to sprawl and avoid certain takedowns.
That was about 5 years ago.
In any case, I don't want to bore everyone with the full chronology up to the present, but the point is that we all are trying to find ways to perfect our art. In my example, as I was exposed to more "problems" I had to keep finding solutions instead of just saying, "well, that's not my art." It wasn't just about cross-training, although cross-training was part of the process. It involved experimenting with different training partners while still continuing to train in my base art(s) or finding new instructors through life events (college, moving, differen jobs, etc). Eventually, we realize that actual
perfection is impossible (there's always a way to improve) and that the
discovery and
process (the journey) becomes the essense of what we are doing. That is my interpretation of "JKD."
Best regards,
Bryan