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thejml2000 t1_iuhnsb2 wrote

This reminds me of the Precision vs Accuracy definition.

A rocket is precise if it can hit the same spot over and over. It’s accurate if it can hit close to the target over and over (think shotgun). You kinda need both.


axonxorz t1_iuigocv wrote

The missile knows where it is at all times. It knows this because it knows where it isn't. By subtracting where it is from where it isn't, or where it isn't from where it is (whichever is greater), it obtains a difference, or a deviation.


Randomthought5678 t1_iuk8i5z wrote

Copy pasta: Accuracy is how close a value is to its true value. An example is how close an arrow gets to the bull's-eye center. Precision is how repeatable a measurement is. An example is how close a second arrow is to the first one (regardless of whether either is near the mark).