Helge TImmerberg is one of germany's most innovative journalists and travel writers. in his new book "Joint Adventure - A Journey into the World of Cannabis", he simply describes quite honestly when a joint helps him and when it harms him - and why this is nobody's business but his own: "I'm not going to let habitual drinkers tell me I can't smoke pot." The veteran of the war against marijuana prohibition has now traveled through the countries that have already legalized cannabis. What's in store for us if, for a change, pragmatism triumphs over the raised forefinger in Germany, he tells in his book.