(Jon of the Clue Crew walks with crutches.)  Crutches are an example of a simple lever; the tip of the crutch acts as this point on whcih a lever turns
[DOC] [TLE] Handbook of Mobile Communication Studies [PAR] James E. Katz, Katie M. Lever, and Yi-Fan Chen discuss the mobile music 
phenom- ... Before turning to the specific chapters, it is useful to highlight some 
points that un- ......