This is interesting stuff, thanks. It's also fun to think about the remarkable advances in things like geared devices, automatons and water wheels in the Hellenistic period through to the end of the Western Empire. Most famously the Antikythera device: http://hist.science.online.fr/antikythera/MORE-DOCS/Greek%20...

It's tantalizing to imagine the next steps from these sorts of devices, like windmills, clocks, programmable mechanical looms, steam power, etc. Given the quality of the engineering in the Antikythera mechanism, it might have been within the technological abilities of Greco-Roman society to develop a classical era version of industrialization. Of course, then you get into the whole debate about whether a slave society has an economic impetus to industrialize (I think they do, following Sidney Mintz's point in "Sweetness and Power" that Caribbean sugar plantations in the 18th century were proto-industrial, factory-like spaces, but that's another discussion).