artifact

This term carries a strong association with discovery and preservation. In an archaeological sense, it implies a physical bridge to a lost era, evoking a feeling of reverence and academic curiosity. It suggests that the object is no longer used for its original purpose but is now a witness to history. In technical or scientific fields, the word shifts toward a negative connotation of error or contamination. Here, it describes a phantom signal or a glitch that does not exist in the original subject but was created by the tools used to observe it, signaling a need for correction or filtration.