What I would find interesting is if the tech trees of different civilizations, not just in Earth but elsewhere would eventually converge. And if you can reach a

What I would find interesting is if the tech trees of different civilizations, not just in Earth but elsewhere would eventually converge. And if you can reach a point where you can anticipate that, how would that predetermine the relationshp between your civilization today and others in the future, or even better, how would that define the relationship between those more advanced to those behind them?