How to build a motor<br>Wind wire around a cylindrical object like a pen or pencil cell. This coil of wire will be the moving motor armature. If the wire is thick then the diameter of the coil should be larger.
building a motor is considered to be a waste of time. 
according to the text, we don't know if it is useful or not. 
( z1 consider :ARG1 ( z2 waste :ARG0 ( z3 build :ARG1 ( z4 motor ) ) :ARG1 ( z5 time ) ) )