A mathematician, an engineer, and a physicist are asked to prove or disprove "all odd numbers are prime."

Mathematician: "3 is prime. 5 is prime. 7 is prime. 9 is not prime. Therefore, it's false." Engineer: "3 is prime. 5 is prime. 7 is prime. Therefore, by induction, it must be true." Physicist: "3 is prime. 5 is prime. 7 is prime. 9 is prime. 11 is prime...."Geoff Hagopian adds...

Statistician: "3 is prime. 5 is prime. 7 is prime. 9 is an outlier. 11 is prime...." 13 is prime all odd numbers are prime.Paulo Gomes adds...

Economist: 1 is prime, 2 is prime, 3 is prime, 4 is prime, all odd numbers are prime...William Stuart adds...

Epidemiologist: 3 is prime 5 is prime 7 is prime 9 is not 11 is prime... "Most odd numbers are prime." Reporter on evening news: "A recent epidemiological study proves that many odd numbers cause cancer and may cause birth defects, but you should check with your doctor."Eric S. Raymond adds...

Feminist: 3 is prime 5 is prime 7 is prime Your failure to recognize 9 as prime is part of the phallocentric, hegemonic discourse by which white European males oppress womyn and persons of color. 11 is prime 13 is prime All odd numbers are prime, worthy, and special, dammit!Richard Pardoe adds...

As an engineer, I object to being lumped into a single classification on this issue. The following distinctions must be made: Engineer: "3 is prime. 5 is prime. 7 is prime. Therefore, by induction, it must be true." Expert Engineer: "3 is prime. 5 is prime. Therefore, by induction, it must be true." Professional or Registered Engineer: "3 is prime. Therefore, by induction, it must be true. Paid Court Expert: Based on my experience, it is truetyr31416 added...

On Sun, Mon, Tue, Wed, 8, 9, 10 & 11 Feb 1998, several users wrote: >...and I think he's the closest!: > > 3 is prime > 5 is prime > 7 is prime > 9 is .... >11 is .... Guys, I think we have beaten this dead horse down to its atomic components... :(

Paul Giovacchini added...

Average PC User: 3 is prime 5 is prime 7 is prime 9 is General Protection Fault, does that count?Irv Rosenfeld added...

Statistician: 3 is a prime number. 5 is a prime number. 7 is a prime number. 9 is not a prime number. 11 is a prime number 13 is a prime number. All odd numbers are prime to an 85 per cent confidence level Computer Programmer: 3 is a prime number. 5 is a prime number. 7 is a prime number. 9 is...NOT a prime number! 11 is a prime number. 13 is a prime number. All odd numbers are prime. I still have bugs in my program. Theologian: 3 is a prime number. 5 is a prime number. 7 is a prime number. Enough with the numbers! With God's help all odd numbers are prime.Anything to add? Please don't bother to mail me with your version of this tired old joke.

Find out about REAL prime numbers here.

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