Why 12 in a Dozen? The Surprising Logic Behind This Ancient Counting System

• The term "dozen" originates from the French "Douzaine" and Latin "Duodecim," both meaning 12, adopted into English in the 14th century.
• Ancient civilizations like Babylon, Egypt, and Rome favored the duodecimal system (base 12) over the decimal system (base 10).
• One counting method involved using the thumb to count the three joints on each of the other four fingers, totaling 12.
• The number 12 is highly divisible (by 2, 3, 4, 6), making it practical for trade and distribution, unlike 10 (only divisible by 2, 5).
• Astronomical and natural connections, such as 12 lunar months, 12-hour clock cycles, and 12 zodiac signs, reinforced 12 as a symbol of completeness.