chewing tobacco does not cause cancer Can You Get Oral from Tobacco? File:Tobacco cancer.png - Wikimedia Commons

Meeting adult demand for smoke-free products would require dramatically lowering barriers to entry to allow at least 4,000 smoke-free products on the market (around the same as the number of cigarettes)

Consistency matters more than intensity

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For example, a pipe maker might divide their pipes between a line for light brown, smooth finished pipes, and another line for much darker, smooth finished pipes, or for sandblasted or rusticated pipes