Riddle

An archaeologist finds a coin dated 48 B.C. How did he know it was a fake?

Try it first, then reveal and read the payoff.

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Answer

Take a moment to solve it, then reveal the answer below.

Why it works

Trap: You treat the date as historically normal.

Often wrong: Assuming “B.C.” would have been written at the time.

The giveaway is the date label. People in that era did not stamp “B.C.” on coins, because that system was invented centuries later, so the coin could not be real.

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