Marketing consultant: Last year I predicted that LRG' s latest advertising campaign would be unpopular with customers and ineffective in promoting new products  But LRG ignored my predictions and took the advice of a competing consultant  This season' s sales figures show that sales are down and LRG' s new products are selling especially poorly
Thus, the advertising campaign was ill conceived
it takes for granted that LRG's sales would not have been lower still in the absence of the competitor's advertising campaign