“work,” nor the divisions of time that create “full time” and 
“free time.” Leisure excludes time as a container. Once time is 
mechanically or visually enclosed, divided, and filled, it is 
possible to use it more and more efficiently. Time can be 
transformed into a labor-saving machine, as Parkinson reveals 
in his famous “Parkinson’s Law.”

     The student of the history of the clock will find that a 
totally new principle entered with the invention of the 
mechanical clock. The earliest mechanical clocks had retained 
the old principle of the continuous action of the driving force, 
such as was used in the water clock and in the water wheel. It 
was about 1300 A.D. that the step was taken of momentarily 
interrupting rotary movement by a crown rod and balance 
wheel. This function was called “escapement” and was the 
means of literally translating the continuous force of the wheel