One of the things that surprised me as well was that, in one of your charts, you indicated that there are people who could have a level of five nanograms of cannabis in their system after eight to 10 hours. That's pretty amazing. I would think that most people, if they're smoking a few joints one night, just like having a few beers, are sober when they wake up in the morning, but this is an indication that they're not, that it's in their system. Does it also impair them?
