Thank you.  The effect of learning on the brain is one in which I have had a long interest.   I am no expert but can make some sence out of this. Slow reading. My own experience with learning and improving code is fascinating. I think it is rather different from learning a language.   My ideal is to be able to understand code as I understand print or speech.  I originally learned the write it down method.  Can't write fast enough now and typing requires two things at once.  Eell then why doesn't  my printing?  I am a pretty good touch typist but it's different than printing.  Also at first high speeds the letters just come into my head at least sometimes and until I fatigue.  This list and the straight key list are the only places I have been able to share my experiences.  

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5526915/?report=classic