As the world's drug habit shows, governments are failing in their quest to monitor every London window-box and Andean hillside for banned plants. But even that Sisyphean task looks easy next to the fight against synthetic drugs. No sooner has a drug been blacklisted than chemists adjust their recipe and start churning out a subtly different one.

A waterstop, which is installed before pouring the concrete, may be effective in sealing joints, but is not applicable for cracks.

Moreover, the cultural grounding of relationship is evident in features of research that do consider personal enemyship, as well as in the relative absence of research about personal enemyship.

But in a show of one of the lucid flashes common to dementia, Fabian executed a document in which he stated he was not requesting a ticket for self-deportation, but only for a visit to Nigeria.