Before mechanical bowling alters were invented in 1936, boys were hired to set bowling pins after they were knocked down.
During the18th and 19th centuries, resurrectionists would dig corpses out of graveyards and sell them to medical schools.
“Computer” used to be someone’s title. Before electronics took over, these workers – usually women – converted numbers and calculated other numbers by hand. They literally computed.
Rat catchers used to snag the disease-carrying rodents that once ran rampant in residential neighborhoods.
Before radar, military personnel used other tools to detect the enemy. One of such tools was called acoustic location. Extended horns helped people detect vibrations and locate sound, even over hills.