[adolph]

Any citation for that statement about impairment? Does it impair less than texting to talking on the phone? There was a stunt article in the LA Times that is short on detail but indicates that marijuana may impair in different ways from alcohol:

http://articles.latimes.com/print/2010/oct/20/local/la-me-10...

[Alex3917]

http://www.norml.org/index.cfm?Group_ID=7459

http://en.wikipedia.org/wiki/Short-term_effects_of_cannabis#...