Although the On-Guard position is a formidable overall stance, it is by no means the only one. Lee acknowledged there were times when other positions should be used. He felt the dynamic property of JKD was what enabled its practitioners to adapt to the constant changes and fluctuations of live combat. He believed these decisions should be made within the context of "real combat" and/or "all out sparring" and that it was only in this environment that a practitioner could actually deem a technique worthy of adoption.