For Q2, I think the main thing is that we have to distinguish what was the point of Drucker and what was the point made by the author. Drucker believed that TQM "can work successfully in conjunction with two other older management systems", while the author did not completely agree. The author agreed that all three share "the ultimate objective of increasing profitability", TQM differs from the other two by requiring "fundamentally different strategies...". that's
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