Checklists have gained popularity in recent years because of the ease of communicating through computers and the ease of shar­ing information through databases. Every company has established checklists based on their experience, and examples of some of the risks are presented in section 9.2. However, while the checklist is based on concrete thinking around what is known and set out in the checklist, the anticipation of risk and its possible consequences demands a freer-thinking approach that allows thinking "outside the box" of any checklist, no matter how apparently exhaustive.