rubbish in, rubbish out

rubbish in, rubbish out

If the data entered is inaccurate, the results will be too, no matter how sophisticated the machine or program is. We need to get accurate results, so please check your data thoroughly before entering it in the system—rubbish in, rubbish out, after all.
See also: out, rubbish
Farlex Dictionary of Idioms. © 2024 Farlex, Inc, all rights reserved.
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