In response to:

The War on Pot: Not a Safe Bet

Krymsun Wrote: Jan 31, 2013 12:34 PM
But, unlike with alcohol, the accident risk caused by cannabis, particularly among those who are not acutely intoxicated, appears limited because subjects under its influence are generally aware of their impairment and compensate to some extent, such as by slowing down and by focusing their attention when they know a response will be required. [Allison Smiley. Marijuana: On-Road and Driving Simulator Studies]
As recreational drugs go, marijuana is relatively benign. Unlike alcohol, it doesn't stimulate violence or destroy livers. Unlike tobacco, it doesn't cause lung cancer and heart disease. The worst you can say is that it produces intense, unreasoning panic. Not in users, but in critics.

Those critics have less influence all the time. Some 18 states permit medical use of marijuana, and in November, Colorado and Washington voted to allow recreational use. Nationally, support for legalization is steadily rising. A decade ago, one of every three Americans favored the idea. Today, nearly half do -- and among those under 50, a large...