Do questions over testing inform your view of marijuana legalization?

“In a 2012 study published in the journal Psychopharmacology, only 30 percent of people under the influence of THC, the active ingredient in marijuana, failed the field test. And its ability to identify a stoned driver seems to depend heavily on whether the driver is accustomed to being stoned,” writes Maggie Koerth-Baker in the New York Times.

A 21-year-old on his first bender and a hardened alcoholic will both wobble on one foot. But the same is not necessarily true of a driver who just smoked his first joint and the stoner who is high five days a week. In another study, 50 percent of the less frequent smokers failed the field test.

Today’s Question: Cops have a hard time determining if someone is high on marijuana, does that inform your view on legalization?