csl512 t1_jeb8fqm wrote
Reply to comment by fubo in Eli5: On a production line, how do they make a car, plane or anything else be identical from one another without differences? by SideburnG
Better way can also include stuff like https://en.wikipedia.org/wiki/Poka-yoke to make it more resistant to human errors.
Like if you have part A1, A2, and A3 that all can go into square hole B, but you actually want them to go through corresponding holes B, C, and D, then you could make it so it is physically impossible to put them all through the square hole.
An everyday example would be electrical connectors with different sized blades, or that can only be connected in a certain orientation because they aren't symmetrical.
fubo t1_jeb9czm wrote
One formulation of Murphy's Law: "If there's more than one way to do a task, and one of those ways will lead to disaster, someone will do it that way."
Running this backwards: If you don't want someone to cause a disaster, you make it impossible to do the task that way.
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