I find it interesting that there is very little emphasis on uniformity of production when it comes to early glass manufacture. To me, it is an essential ingredient when analysing the differences between a glass of different provenance. E.g., the suggested either natron (Egypt) or plant-ash-based glass (Mesopotamia) from the Late Bronze Age. My research-based findings on limited data sets suggest that Late Bronze Age glass production has a production uniformity of around 14% compared with that of c. 400 AD glass used by Romans. Yes, relative Wt% oxides and PPM element analysis are important if not essential to enable objective provenance however 'innovative human intention' in the production process is necessary to establish cultural, political connections to the production.