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Safety: ideas and frameworks explained

A collection of ideas, frameworks and techniques related to Safety, explained clearly so they are easy to understand and share.

Yes Sayers are rewarded by adventure, No Sayers are rewarded by safety — wisdom from Keith JohnstoneYes Sayers are Rewarded by Adventure, No Sayers are Rewarded by SafetyDetecting prostate cancer summary - how screening for prostate cancer has changed DRA, PSA blood test and MRI screening compared in the old way and new wayDetecting prostate cancer: old way, new wayNormalisation of deviance: A person looks dubiously on at a building site which seems to be ignoring all the safety signs. (Normalization of deviance)The Normalisation of DevianceWhat is a phone zombie example: pedestrians turned zombies staring into their phones run into danger and bump into each other while crossing a roadPhone zombieRead-Do and Do-Confirm checklists illustration: examples of a Dinner party fail and an Expedition checklistTwo types of checklists: Read-Do, Do-ConfirmThe tomato slicing test to see if you need to sharpen your knife. A knife running over the surface of a tomato followed by a disaster needing sharpening or some perfect precise slicesThe tomato test: how to tell if your knife needs sharpeningTime passing on an inside bend illustration (UK edition): showing a two-lane carriage way bending to the right with a red arrow to show the shorter route for overtakingPassing on an inside bendWhat is James Reason’s Swiss Cheese Model showing layered defences with holes to explain human error and accident causation with a covid coronavirus pandemic example. A core safety model used in healthcare, NHS patient safety, and aviation, illustrating how aligned weaknesses can lead to failure.The Swiss Cheese ModelForcing functions in design - 2 examples: a hotel room with the lights controlled by key card and a lawnmower that needs both hands to turn it onForcing function — design

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