What is a medium? the inspiration used to create a work of art
the information used to create a work of art
the means or method used to create a work of art
the resources used to create a work of art

Ead this sentence from the evolution of useful things.the underlined phrases indicateaaking waterproof sandpaper would allow wet sanding,which in turn would cut down on dust, and thus be a greatmprovementpassing of timea directional change of positiona cause-and-effect relationshipsequence of events.save and exitmark this and retur