I guess that's what makes one "fluent" -- the ability to use correct cases and genders just from imitation and lower memory rather than "googling" through your cortical memory system for the correct structure.
Kind of like typing. If you ask me where the "B" key is on the keyboard, I could not tell you without poising my fingers in the air and pretending to type out Bad Boy or something like that.
"Oh, it's down here near the space bar !"
I don't hearken back to the days in typing school when I went "home key F, down and to the right for B, back to home key F."
I guess that's called "muscle memory" and I guess there's also a speaking memory that's not really a part of direct cerebral cortex storage and retrieval.
Just like a walking memory. You don't tell individual leg muscles to operate in thus-and-so sequence to get from here to there. You just decide to
walk.
Hmmmn... that even sounds flaky to me, but I think I touched on the nature of the problem.
Hell. It's 8 AM and I just woke up and I only had half a cup of coffee so far and I'm ignoring my advice to myself that says, "NO ONE-CUP POSTS !"
Oh, and I don't think "efficiency" has anything to do with the development of languages. Has more to do with Genesis 11: 1-9 than anything else.
Hmmm. I gotta play with that one for a while in terms of the world wide net.
Terry guzzles down the rest of that first cup.
REF (playful):
https://youtu.be/XFayFUiyv20 (2:31)