Why setback you asked? Without ashtrays, it would be the biggest setback for AP-Targetists. They believe that seeing many full ashtrays at a table is their luckiest sign for jumping in the game to whack the dealer. Personally I believe that the table with empty rack (almost no chips) WAS the luckiest sign, not the one with full ashtrays. However, the cards did not know neither the astray is full nor the rack is empty. The cards just come out mindlessly of the shoe to whack anybody UNPREPARED & UNTRAINED with true-AP-skills. Get it, youngman?