[Eastbound]

"I was working in my doctoral dissertation on the BMAC and some related cultures."

Any evidence of common origin of all languages from Sumerian?

[Ilya Mourometz]

I don't know what the writing discovery is. The problem is, without a "Rosetta Stone", it is virtually impossible to relate symbols that are writing with any particular language. Unless there is a way to connect the symbols with phonemes (sounds), it is really impossible to know what language family epigraphs relate to.