PPT Slide
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Notes:
Humans have indulged in tobacco for hundreds if not thousands of years, yet cigarette smoking is a relatively new preoccupation. Before 1881, the year the cigarette-rolling machine was invented, most people consumed tobacco by chewing it, smoking it in a pipe, or snorting it as snuff, though some smokers hand-rolled their own cigarettes. The rolling machine allowed for the mass production of cigarettes and helped establish the new, state-of-the-art cigarette as the most common and popular vehicle for tobacco consumption. At first glance, this vehicle may look simple -- a tube of paper with tobacco in it. But each of a cigarette's myriad elements has been carefully engineered for a specific purpose.