Again, in general sense. Software engineers are too used to computers being fragile wrt. inputs. Miss a semicolon, program won't compile (or worse, if it's JavaScript). But this level of strictness wrt. inputs is a choice in program design.
Error correction was just one example anyway. Programmers may be afraid of garbage in their code, but for everyone else, a lot of software is meant to sift through garbage, identifying and amplifying desired signals in noisy inputs. In other words, they're producing right figures in the output out of wrong ones in the input.
And also:
> they need to supply ones specifically engineered to be uncorrelated with the right figures.
I assume most people will understand this way (including me) when it's said to "input wrong figures".
This does not refute the concept GIGO nor does it have anything to do with it. You appear to have missed the point of Babbage's statement. I encourage you to meditate upon it more thoroughly. It has nothing to do with the statistical correlation of inputs to outputs, and nothing to do with information theory. If Babbage were around today, he would still tell you the same thing, because nothing has changed regarding his statement, because nothing can change, because it is a fundamental observation about the limitations of logic.
I do usually know what the point of any comment quoting that Babbage's statement is, and in such cases, including this one, I almost always find it wanting.
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