Replacement can be a marvelously precise process, so that details of shell ornamentation, tree rings in wood, and delicate structures in bone are accurately preserved.
Much of the language used to describe monetary policy, such as "steering the economy to a soft landing" or "a touch on the brakes", makes it sound like a precise science.
The pulling frequecncy needs to be high to ensure high data accuracy, but high pulling frequency may induce redundant checks leading to high network traffic.
However, the PLA would need to make substantial advances in missile guidance and countermeasures in order to achieve the very high precision required to attack a moving target.
The colors from the color sacks are supplemented with colors that are reflected from the environment, and that's how they are able to mimic colors with such precision.