i would like to thank those of you who actually answered my question. but, like i said, i am a former pot smoker and no i'm not too awful concerned about the safety aspects of the subject due to the fact that pot doesn't make you see little purple smerfs not does it make you see a deer that is not there. i've been more "impaired" from a hangover than i ever have been while toking on a bowl. i did it for 16 years and never once had an accident or mistake in kill!!!
thanks for all the responses!!!