behaviour by the organisational hierarchy it is more likely to be rejected and fail in its purpose. A checklist perceived as helping the operator to save time and reduce error is likely to be better accepted. This is more likely to happen when the user is involved in the development of the checklist. Rae et al.(2018) define safety clutter as "the accumulation and persistence of 'safety' work that does not contribute to operational safety", and state that "when 'safety' rules impose a significant and unnecessary burden on the performance of everyday activities, both work and safety suffer". Concern Excessive dependence of checklists may hinder performance when dealing with a time-critical situation, for example a medical emergency or an in-flight emergency. Checklists should not be used as a replacement for common sense. Intensive training including rote-learning of checklists can help integrate use of checklists with more adaptive and flexible problem solving techniques. Experimental work has shown that memorised checklists are less effective than written checklists in identifying unsafe conditions when time is not critical. See also Check sheet, a form (document) used to collect data in real time at the location where the data is generated Checksum, data used to detect errors in other data (often automated) Digital calendar Task list organization, the process of planning and exercising conscious control of time spent on specific activities Punch list, also known as snag list, a construction project document To do list The Checklist Manifesto: How to Get Things Right'' – 2009 book by Atul Gawande advocating the use of checklists References Note-taking Health care quality