Again, it is worth keeping in mind when comparing the rate of discoveries that public funding for medicine and the sciences is orders of magnitude larger than for the humanities. We work slow in part because we work on a shoestring.

The best exhaustive study on helmets in the Roman Republic - an iconic marker of Roman identity and the Roman army - is a 30-year-old unpublished dissertation that I think likely gets their primary manufacture method wrong!

Much work to be done.

Charting the rise and fall of ancient trade through shipwrecks was a major 1990s thing (substantially altering our understanding of the ancient economy) but an approach massively refined to tune for discontinuities in the evidence, e.g. Leidwanger (2020).