How does one learn (music) more efficiently?

Crossposted (with some audience-based edits) from my Substack.

The best way to share this is by showing it.

Very interested in your thoughts, especially from people who have experience with Ericsson/​Pool deliberate practice either from a memory-precision perspective (strings of numbers, Shakespearean soliloquies, chess openings, etc.) or from a physical-precision perspective (guitar, piano, free throws, etc.).

If you want me to share/​show more, I’ll post another video tomorrow...