The 'fundamental flaw' that's costing retailers By: CNBC.com News May 21, 2014 at 12:52 PM EDT Educated and engaged store associates who could meet consumers' needs rang up much higher sales than those who didn't, according to a study. Read More >> Related Stocks: Dick's Sporting Goods Inc GUESS GX Defense Tech ETF Microstrategy Cl A Wal-Mart Stores, Inc.