See first illustration: http://enwp.org/Bullwhip_effect http://enwp.org/Bullwhip_effect The graph representing over-/undersupply resembles the movements of a wh

See first illustration: http://enwp.org/Bullwhip_effect http://enwp.org/Bullwhip_effect The graph representing over-/undersupply resembles the movements of a whip. Out of curiosity: did you try to look up the answer to your question before asking it here?