It really annoys me when non-scientists throw around the term "energy" without qualifying it. What type of energy? Kinetic energy? Potential strain energy? Do you even know the difference? Its poor science and even worse coaching. Trying to blind cricketers with jargon that you yourself don't even appear to understand is just a way of boosting your own ego. As for using the term "force vector" when trying to engage with bowlers, give me a ************** break. Try explaining it clearly: if you jump into your action with a bit of speed and then pivot hard around your front leg, then your arm will come over quicker. The quicker the arm, the more spin you get (all else being equal). None of this is rocket science, its stuff that all spin bowling coaches have been teaching for years.