That's a very common occurrence outside of software. I know a guy who is famous within his field for certain important discoveries. Later, he "discovered" some

That's a very common occurrence outside of software. I know a guy who is famous within his field for certain important discoveries. Later, he "discovered" something else, only to find out that it had been published decades earlier by people in an adjacent subject field, and that parts of industry had been using it for a long time. Years later, there are still no new resources about it. If you know, you know. If you don't, you don't.