There is a lot of evidence in the GitHub. See JTree library and the ohayo data vis tool. There is also a big open source release coming soon—the largest databa

There is a lot of evidence in the GitHub. See JTree library and the ohayo data vis tool. There is also a big open source release coming soon—the largest database of programming languages and features in the world by a factor of at least 10x, more like 100x. Over 10k languages, over 1k columns. We is the Tree Notation Lab. Will be announcing what that is and the funding for it later this month.