Edison invented the telegraph
When Edison was a boy of 15, he worked as a telegraph operator
He worked from 7 a.m. to 7 p.m.
He worked at night
Edison sent signals with astonishing exactness
The inspector came because no signals were coming
Edison showed his invention to the inspector
The inspector did not wake the boy up to see how the mechanism worked
The inspector advised Edison to patent his invention
Edison was fired for sleeping on duty
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