Ethiopian Math

Halved or Doubled - the answer is always right!


Ethiopian tribesmen can only double or halve numbers - by using pebbles as counters. By halving and doubling, they take any two numbers, multiply them and come out with the right answer.

For example, if a tribesman wants to buy 13 sheep at 15 Ethiopian dollars each, here's how he works it out...

Put 13 in a left column, and 15 in a right column. Halve the left figure - you get 6 1/2... ignore the 1/2 (Ethiopians don't know anything about fractions). Double the right-hand figure. Keep this up until the left-hand figure is 1. You should now have:

     13     15
      6      30
      3      60
      1    120

Even numbers in the left column are evil to the superstitious tribesmen, and must be destroyed - together with their guilty partners. So scratch out 6 and its partner 30. Now add the right-hand column and you have the correct answer: 195. Try this with any two numbers - it doesn't matter which side is halved or doubled - the answer is always right! The Ethiopian's primitive mind simply cannot grasp how our system works. Of course you see at once how this joe-k works... Or do you?


QuotaBills
Everything is physics and math. - Katherine Johnson

Mathematics has beauties of its own. - J.W.A. Young

Revolutions never occur in mathematics. - Michael Crowe

Mathematics: the only subject that counts. - Unknown

Pure mathematics is the poetry of logical ideas. - Albert Einstein

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Cauliflower is nothing but cabbage with a college education. - Mark Twain

Mathematics has given economics rigor, but alas, also mortis. - Robert Heilbroner

"Obvious" is the most dangerous word in mathematics. - Eric T. Bell

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Academe: An ancient school where morality and philosophy were taught - Daffynitions joe-ks.com

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Conversation enriches the understanding, but solitude is the school of genius. - Edward Gibbon

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Education is what remains after one has forgotten what one has learned in school. - Albert Einstein

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There are advantages to being President. The day after I was elected, I had my high school grades classified Top Secret. - Ronald Reagan

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The Arc de Triomphe, the Eiffel Tower. They're monumental. They're straight out of Page 52 in your school history book. - Billy Crystal

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A man who has never gone to school may steal from a freight car; but if he has a university education, he may steal the whole railroad. - Theodore Roosevelt

Mathematics is not a careful march down a well-cleared highway, but a journey into a strange wilderness where the explorers often get lost. - W.S. Anglin


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24-Oct-2021