[aylons]

The archaeologists know that and say as much in TFA:

"The paints used in the reconstructions are chemically similar to the trace pigments found on parts of the surface of the originals. However, those pigments formed the underlayer of a finished work to which they bear a very conjectural relationship. Imagine a modern historian trying to reconstruct the Mona Lisa on the basis of a few residual pigments here and there on a largely featureless canvas.

How confident could we be that the result accurately reproduces the original?

This point is not actually disputed by supporters of the reconstructions. For example, Cecilie Brøns, who leads a project on ancient polychromy at the Ny Carlsberg Glyptotek in Copenhagen, praises the reconstructions but notes that ‘reconstructions can be difficult to explain to the public – that these are not exact copies, that we can never know exactly how they looked’."

[Jakob]

Contemporary historic preservation sees itself as the guardian of historical substance. The content of a monument is bound to the preservation of the inherited material.

Georg Dehio’s principle of "conserving, not restoring" is often invoked as a synonym for this self-conception. Old and new need to be clearly separated.

It is a counter-movement to the 18th century historicism which ”destroyed” a lot of old monuments beyond repair.

Personally, I think we went too far on the conservation angle (at least in Germany, not sure about other countries), and should restore a bit more again with the knowledge we have. But much more intelligent people have debated that for centuries, so I guess their answer would be the same like https://askastaffengineer.com/.

[golemotron]

I'm in the conserving camp. It's more truthful than the narrativization that accompanies attempts to restore. We should remember that we all had a reptilian vision of dinosaurs for decades (centuries?) before the latest feathered view. We would have been better with neither. Just display the bones: what we have. Everything else burdens the public with guesses.

[pqtyw]

> that these are not exact copies, that we can never know exactly how they looked

Meaning that these "reconstructions" are a pretty pointless and have no real purpose.

[alistairSH]

Idealy, for me as a layperson who is only going to see these in a museum, I'd love to see a series of pieces...

First, the original, untouched (preserved but not restored?) sculpture.

Second, the reproductions highlighted in the article. With appropriate notations about "these are the base layers, not complete, etc"

And third, a best-guess at what the original could have looked like, based on the first two. Yes, this might be wrong and need to change over time.

[JoeAltmaier]

They show us what the base layers were, and what pigments of the day looked like.

It may be an academic point. But they are academics.

[indoordin0saur]

I totally agree with. This is not a reconstruction because the shading, detail and subtler colors are completely left off. It's just a reconstruction of the statue as it would have been in an incomplete state!