host: carl from crownsville, maryland. caller: good morning. i keep hearing that there has never been a study, there has never been a study. president nixon authorized a two-year in-depth study to find out the detrimental effects of marijuana. when he found that there were no detrimental effects, he classified the study. i would suggest that these two people have deep-seated psychological problems prior to the ingestion of marijuana. actually, to your latter point, i don't know exactly about that study that nixon did. that is interesting. but the latter point, i am here in colorado and from everything that i understand it talking to the families and friends, these two individuals actually did not have psychological problems prior to this. really, really, really tragic, tragic accidents. host: so is it in both cases they simply ate too much of the product? is what -- yes, what the investigation and the toxicology report is pointing out. i know for a fact that the 19-year-old did not have anything in his system aside from the marijuana. of mariju