GIGO

(computer science) A phrase often stressed during introductory courses in computer utilization as a reminder that, regardless of the correctness of the logic built into the program, no answer can be valid if the input is erroneous. Abbreviated GIGO.

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(Garbage In Garbage Out) "Bad input produces bad output." Data entry is critical. All possible tests should be made on data entered into a computer.

"Garbage In, Gospel Out"

An alternate meaning. Many people have complete faith in computer output!

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GIGO is not a computer language despite its similarity to the names of computer languages; instead it is an acronym for the truism that one gets out of something what one puts into it: GIGO stands for the phrase Garbage In, Garbage Out. This is a computer hacker term for when people input imprecise information and get imprecise results.