['wy', 'Ww', 'The', 'fabric/padding', 'combinations', 'that', 'were', 'used', 'in', 'the', 'TSG', 'study,', 'and', 'in', 'general,', 'in', 'all', 'such', 'studies,', 'were', 'chosen', 'such', 'that', 'they', 'would', 'be', 'very', 'sensitive', 'to', 'changes', 'in', 'the', 'cigarette.', 'One', 'could', 'easily', 'find', 'fabric/padding', 'combinations', 'which', 'would', 'have', 'given', 'ignitions', 'with', 'all', 'of', 'TSG’s', '32', 'test', 'cigarettes.', 'Con-', 'versely,', 'one', 'could', 'have', 'just', 'as', 'easily', 'have', 'found', 'combinations', 'which', 'would', 'not', 'have', 'ignited', 'with', 'any', 'of', 'the', 'test', 'cigarettes.', 'It', 'is', 'very', 'difficult', 'to', 'ascertain', 'what', 'the', 'product', 'wix', 'is', 'in', 'the', 'real', 'world,', 'i.e.,', 'what', 'proportion', 'of', 'materials', 'used', 'in', 'real', 'furniture', 'is', 'represented', 'by', 'the', 'types', 'of', 'materials', 'used', 'in', 'the', 'test.', 'Hence,', 'it', 'is', 'difficult', 'to', 'project', 'what', 'impact', 'some', 'of', 'the', 'TSG', 'type', 'cigarettes', 'would', 'have', 'on', 'the', 'real', 'world', 'fire', 'scenario.', 'The', '“worst"', 'cigarettes', 'in', 'the', 'TSG', 'study', 'were', 'more', 'ignition-', 'prone', 'than', 'current', 'commercial', 'cigarettes', '(they', 'had', 'higher', 'tobacco', 'ssnwmes', 'and', 'more', 'porous', 'cigarette', 'paper', 'than', 'commer-', 'cial', 'cigarettes),', 'Hence,', 'the', 'apparent', 'improvement', 'in', 'ignition', 'propensity', 'that', 'is', 'projected', 'from', 'TSG’s', 'data', 'is', 'exaggerated.', 'In', 'reality,', 'the', 'difference,', 'and', 'the', 'realizable', 'improvement', 'between', 'commercial', 'cigarettes', 'and', 'the', '"best"', 'TSG', 'cigarettes,', 'are', 'much', 'smaller.', 'Many', 'of', 'the', 'experimental', 'cigarettes', 'in', 'the', 'TSG', 'study', 'were', 'very', 'different', 'from', 'anything', 'that', 'can', 'be', 'practically', 'produced', 'or', 'has', 'been', 'shown', 'to', 'be', 'acceptable', 'to', 'the', 'consumer.', 'The', 'difficul-', 'ties', 'lie', 'in', 'the', 'areas', 'of', 'tobacco', 'processing,', 'cigarette', 'charac-', 'teristics', 'and', 'smoke', 'chemistry.', 'a.', 'Much', 'of', 'the', 'improved', 'ignition', 'behaviour', 'becomes', 'apparent', 'enly', 'at', 'very', 'high', 'proportions', 'of', 'expanded', 'tobaccos.', 'Un-', 'SLZEO6LES']