No. I've had an excellent memory all my life and I have noticed it's not quite the reliable cache for everything important that it used to be. But the journalling the article discusses is a process to condense learnings and reveal insights much more effectively than just idly reviewing your memory of the day's events mentally.
You mean losing memory over time? Not in my case. I switched from doing things in memory to keeping a notebook at the ripe old age of 24. For two reasons.
The first is that I simply couldn't hold everything in my head anymore because I had to track 5-10 different projects at any time, and context switching without something written down sucks when you have to context switch multiple times a day.
The second is that writing things down was a great way to force myself to clarify my thinking. I became more articulate across the board, not because I got better at bullshitting, but because I was now reserving time in advance to think through open issues in a structured way.
