 D. dissertation, Stocking and Mueller pointed out the error of mistaking a monopolist's inability to exercise market power by raising price above the current price for an inability to have already exercised market power by raising price significantly above the competitive price.Courts that use a monopolized product's elevated market price will typically misconstrue a completed anticompetitive act as a lack of market power.A second issue addressed by Stocking was the extent to which concepts of "workable competition" and the "rule of reason" should be employed in antitrust enforcement.