By J. Mark Powell

InsideSources.com

As we celebrate America’s working men and women this Labor Day, we’re also aware that artificial intelligence and other new technologies are transforming the economy in which they work. Some commonplace jobs of today (remember TV repairmen?) will become obsolete tomorrow.

Below is a list of job titles that were once fairly common. See if you can guess what these folks did for a living.

1: Knocker-uppers

A: Member of the military who prepared artillery shells by “knocking” them securely into place.

B: People hired to go to workers’ doors and wake them up in time for work.

C: Farmers who specialized in animal husbandry.

Answer: B: From the Industrial Revolution into the 1920s, knocker-uppers worked as human alarm clocks, using sticks, clubs or ston

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