Standardization and SOPs are the outcomes of industrialization, specifically the effort to prevent major accidents. The 1856 train disaster in Pennsylvania occurred when railway engineers in two trains approaching an intersection acted on conflicting interpretations of the rules of the road. The public remonstrations led to the standardization of procedures and what we now know as SOPs. The dramatic example set by the accident showed that unconsidered processes and informal communication cause problems. The example also illustrated how step-by-step procedures clarify processes.
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