The notion of cross-training in Jeet Kune Do (which was created by Bruce Lee) is similar to the practice of Mixed Martial Arts (MMA) in modern times — Bruce Lee has been considered by UFC president Dana White as the "father of mixed martial arts".Many consider Jeet Kune Do to be the precursor of MMA because of its syncretic nature. This is particularly the case with respect to the JKD "Combat Ranges". A JKD student is expected to learn various combat systems within each combat range, and thus to be effective in all of them, just as in MMA.
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It is generally agreed upon by the scientific community that each star in the sky is a different galaxy, the same way our "Sun" here in the Milky Way galaxy is classified as a star. The popular conjecture, also, is that there are hundreds billions of galaxies in the entire universe (as estimated by the Hubble Telescope), each of which has its own set of planets. It is extremely plausible that out of those billions of planets, there is intelligent life out there that is far more technologically advanced than humans, and that they have in fact visited our planet.
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