When you walk down the street and carry a suitcase you will carry it close to the body. It is easier and much less likely to be grabbed and taken. Do the same with a tool like the knife and screwdriver. Have a few partners walk randomly and at any time draw your knife and work on someone. Note how far it is from your body and how easy it is or hard to take the blade from you or control your body without taking the blade away. You can do the same with soft crayons and children and get the same results over a while. Remember the drill is a way to get somewhere. You can find many ways to yourself. Find the shortest one.