I did a search of the 26 arts of JKD articles. It was written by Paul Vunak in the 1980's for Inside Kung Fu. This article is confusing and proabably not true. I met Ted Wong at a seminar in VA and he said Bruce made up JKD from boxing, wing chun, fencing and tai chi. Bruce took lessons from Wally Jay and Jhoon Rhee and he worked out with the great champions Joe Lewis and Chuck Norris. Jerry Poteet teaches the exact jeet kune do that was taught to him by Bruce Lee. He doesn't teach the 26 arts, that's make beleive. That stuff is to make you think that JKD is some kind of impossible to learn style. If you can box and do wing chun and you can apply the 5 ways of attack that came from fencing you have the foundation of JKD. Now all you have to do is work out about 8 hours a day like Bruce Lee did, study Kristumurti philosophy and in a few years you'll have it. Go to https://www.joelewiskarate.com for info. Mr. Lewis was the best fighter ever trained by Bruce Lee. He says JKD is simple to understand. The problem is you have to work out, meaning fight, a few thousand rounds in order to learn what works and what doesn't work. That's the only way to find out what to absorb and what to reject.