None of it is lost.
Talk for a minute after class. Matlingo writes it up, then asks you about it before you next train.
One email when it opens, nothing else.
Talk for ninety seconds
In the carpark, one-handed, with no signal. It records on your phone and catches up later.
It comes back written up
Your rambling, returned as clean cards — the technique, the correction, the thing you got stuck on — filed under the position and the coach who said it.
It asks you before you train
Questions written from your own notes, timed around your training week, so you walk on already holding the detail.
The archive builds
Months later it is every correction you have ever been given, searchable, on a map of your own game.
It does not teach jiu jitsu. It keeps what your coaches already taught you.