> any mind altering substance (be it alcohol or weed) should have their driving privileges taken away Such a blanket statement without any science backing is

> any mind altering substance (be it alcohol or weed) should have their driving privileges taken away Such a blanket statement without any science backing is without merit. Even phrase "mind altering" is suspect as substances that increase mental focus, reaction time, and clarity all (probably) benefit driving ability. Many substances are "mind altering". Nicotine, Caffeine, Endorphin (from exercise e.g.), even just sugar. Also, mental states; sleep-deprived, agitated, depressed.