Oh I see you have misunderstood me. I don't think that someone is still high weeks after using pot. I don't care. They used. They used a week ago or 25 years ago. I'd rather not associate with drug using algea. They are scum and will never be anything more than drug addicted slime.
If you have ever had any major medical procedures (including a blood transfusion), you quite likely owe your health to a lifelong drug addict. All he did while addicted was revolutionize medicine.