Actually, the CPM
the critical path is the shortest path of activities in a project in which any change in the durations of activity will impact the overall duration of the project. Basically, a line of activities in which there is no 'slack' in time. Theres a corollary in Activity on Node/ Precedence diagramming. Alas I gotta get my nose back into my PMP study guides
Point taken, and after putting the blade through its paces tonight, I retract my earlier comments re: the handle :-)