As to dredging it up at will.
I'm not good at languages. But I think this dredging it up happens with other things like my math skills like Calculus.. I haven't really used any Calculus in the past 20 years. But since I have a college degree in Math, I used to know it quite well. I've been reluctant to tutor someone in the subject since I can't seem to remember many details, yet I'm sure if I tried it would come back to me quickly. It's been that way for me a bit with computer coding. It seems I've forgotten something yet if I really sit down with a book or material it comes back fast. Seems I still remember how to type in vi without really thinking about it and I didn't touch it for over 15 years. (A tty unix line editor that requires knowing/memorizing odd key sequences.) But these were all things I learned as adults.
On the other hand the facts my son inhaled at 3 & 4 he really does seem to have lost. On the other hand I'm sure some of the knowledge he has was built on things he learned at that time.
Last edited by bluemagic; 11/15/16 11:58 PM.