Made to Stick: Why Some Ideas Survive and Others Die

by Chip Heath

Two children did die on Halloween, but their deaths weren’t caused by strangers. A five-year-old boy found his uncle’s heroin stash and overdosed. His relatives initially tried to cover their tracks by sprinkling heroin on his candy. In another case, a father, hoping to collect on an insurance settlement, caused the death of his own son by contaminating his candy with cyanide. In other words, the best social science evidence reveals that taking candy from strangers is perfectly okay. It’s your family you should worry about.