Re: "Internal" and "External"
I think of it terms of an axle and a wheel.
Either the axle will turn a wheel, as in a car - Internal,
or a wheel will turn an axle, as in a water wheel - External
If a person moves themselves, and as a result of that movement, another person in contact with them is affected, it's internal. If, on the other hand, a person has the goal of doing something to the other person an moves toward that end, it's external.
Last edited by morph4me : 01-22-2013 at 03:05 PM.