Have you SEEN the way JWs "walk" from house to house. This is supposed to be the most important work there is and yet they crawl around in groups WASTING time. A door to door salesman on commission makes them look stupid. He maximises his time, moves on immediately when he realises there's no-one home, walks briskly between houses and quickly and efficiently takes his "not home details" JWs knock, wait 5 mins, knock again, walk to end of path, record NH, double check the detail, stroll to next house, repeat.
Joke.