"Significant destruction of the archaeological record and serious corruption of the corpus of knowledge".

Christos Tsirogiannis; David W. J. Gill; Christopher Chippindale, 'A Corrupt Cycladic Corpus of Marble Figures ', Journal of Eastern Mediterranean Archaeology and Heritage Studies (2025) 13 (3): 203–233. https://doi.org/10.5325/jeasmedarcherstu.13.3.0203

ABSTRACT
The urgent seeking for Cycladic figures since the nineteenth century has caused significant destruction of the archaeological record and serious corruption of the corpus of knowledge. Unsurprisingly, there is little prospect of this corruption ever being understood in detail due to the lack of records. The problem proves impossible, as the loss of knowledge cannot now be undone. To address this issue, we examined the contribution to knowledge of collections based in universities (The Ashmolean and the Fitzwilliam), public museums (The J. Paul Getty Museum), and a private collection (Leonard N. Stern). By examining how these Cycladic figures’ collections were historically formed, we understood that they can add nothing to our knowledge of the Early Bronze Age in the Aegean. Therefore, we divided the collected corpus into four distinct parts, suggesting sensible and practical guidelines for the future by which we can salvage some trustworthy understanding from a corrupted mess.

Now it is time to do the same to the "database" of the Portable Antiquities Scheme, where there is equally little control over the hygeine of the "data" included, there being many apparent out-of-place artefacts in it and potential for many, many more "dirty data". A problem blinkered arkies in the UK desiring to work with artefact hunters and collectors rather than dealing with the problem they cause.