Range in Core JKD is determined by the highest probability of functional use of a tool that doesn’t compromise base stability or the ability to move fluidly to another range or inhibit the efficient transition to another tool.
Ranges are specific to the individual and the environment.
Individual examples
– An individual with shorter limbs has a different “kicking range” vs someone with longer limbs.
– An individual with different physical action due to injury, illness, or different capabilities from birth will have different tool use and functionality.
Again, these are not specific to any generalized theory or set pattern of mind that tries to dictate an overreaching range mentality, but instead rely on functional tool use at proximity.
Environmental examples
– Traditional “kicking range” changes its meaning when one person is on higher ground than the other. Kicking tools that were once functional on level surfaces are reduced or inhibited greatly when elevation-in-proximity is taken into account.
– Firing a projectile weapon—a gun for example—has it range functionality changed when shooting under water.
– Future-proofing this must also include tool use in zero-gravity where tool functionality changes according to Newton’s third law of motion (for every action there is an equal and opposite reaction), as well as in heavier and lighter gravitational environments where functional tool use may change or be narrowed where use of that tool can compromise base stability, fluid range change, or tool transition.
Tools definition : Any physical object, idea, concept, chemical substance, electrical or mechanical device, that can be used to gain advantage toward survival in a threat-to-life encounter.
In Core JKD, there is no specific set ranges. There is only functional tool use—or lack thereof—at proximity for each individual.
Excerpt from The Manual of Core JKD