A friend casually asked a light question.
The question: "I'm conscious about writing insights down, but am I actually able to pull out the information I need?"
The worry: "I only leave them in iPhone Notes, and it doesn't feel like they're stacking up."
A common worry, I think. It seemed like a good blog topic, so I'll write it out.
My answer was something like this.
As a premise: I think I'm on the "good memory" side.
Exam-style studying / qualification tests take more drilling for me than for others — I'm not the efficient type there.
But I don't forget conversations, and I remember even quite old things vividly.
One factor: I've always been the type to carry worries, so I replay things in my head often and they get stamped into memory.
And I often talk to other people about recent events or ask for advice — that also helps memory stick.
Up to here that's individual difference in "memory"; the latter you can work on, the former is mixed and not something you can simply fix.
What I thought when I got the question was about how we frame memory.
Put another way: the "view of acquiring knowledge" felt a bit different from mine.
First, "I learned knowledge A, so I should be able to produce A right away" sounds like exam thinking.
"I should tell someone knowledge A so I don't forget A" is also exam thinking.
In general, deciding how to use something the moment you learn it is inefficient.
Of course, thinking from the cards you hold has the merit of making purpose more concrete.
Having knowledge makes it easier to imagine specifically what you can use it for.
At the same time, though, the breadth of purpose should narrow.
The natural way is to acquire knowledge (learn) based on a purpose.
If you learn without a purpose, feeling like nothing accumulates is only natural.
What I want to stress: learning from purpose is natural — but learning itself shouldn't be denied.
Again: it helps you imagine purpose more concretely.
It's always a tradeoff.
Personally I think lean methods — reverse-engineering ToDos from purpose and executing daily — are ideal, but leaning too far is dangerous.
Always tying everything to learning is boring. Frankly, exhausting. Days like that turn into mood swings over hitting or missing goals.
Based on that, the next question came.
"How do you organize simple ideas or judgment criteria?"
As a thinking tool, spreadsheets or a notepad — anything is fine.
I treat judgment criteria as never permanent once set.
So summarizing criteria and putting thoughts into writing is important — but clinging too hard risks bias. Again, tradeoff.
You write to convince "yourself at that moment"; don't expect much more than that.
Going further: writing itself costs effort, so the value is precisely in convincing yourself at that moment.
While answering this, I realized that if you dig deep enough, the only real judgment criterion should be "whether you're happy (or will be happy in the future)."
Everything else is that idea made more concrete (lower abstraction) — and uncovered ranges inevitably appear.
Finally: more than acquiring knowledge or learning itself, chances to throw hypotheses and thoughts at other people based on that knowledge are rare and fun.
That trial is worth many times more than learning alone.
In fact, getting a question from a friend, answering with my own view, and getting their take is also very enjoyable.
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