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Congratulations on your purchase of our revolutionary new product, Wresting Infants Without Injury (WIWI™)! If you have recently acquired a human infant, you may be experiencing the usual joyous spasms of parental sentiment. Do not let a warm emotional glow blind you to the dangers you face. In subsequent chapters, such as “Strollers: The Menace in the Trunk,” we will explain these in more detail. But for your protection, please read this introduction as soon as possible: