Two people on your bus to work every day may be criminals. And your teenage son or daughter, perhaps just starting at college, may be breaking the law or sharing rooms with someone who does. The crime? The possession or use of cannabis - better known as pot. These statistics are not dramatic journalists' headlines either; they're revealed in a government report. Two million people, in this country, have smoked pot. With so many people flouting the law - it is perhaps surprising how little is really understood about pot. Is it bad for one's health, and in what way? Is it addictive? Will it lead to other drug usage? And is the present legislation satisfactory? With Desmond Wilcox in the Man Alive studio tonight are those anxious to discuss the prejudices and the facts about pot.