Oh ok, that does clear things up.
調査によって新たな事実が明らかになった。Through investigation, a new truth was discovered.
I instinctively put ため here. I asked GPT the difference:
Great question—these two are easy to confuse because both can translate to “because of” in English, but they’re used quite differently in Japanese.
| ため | によって | |
|---|---|---|
| Tone | Neutral / slightly subjective | Formal / objective |
| Usage | Everyday speech | Formal writing, reports |
| Meaning | Simple cause/reason | Cause, agent, variation |
| Flexibility | Limited | Multiple meanings |
…which doesn’t help that much? Except maybe for usage?
Quick Rule of Thumb
Use ため → when talking about your own situation or simple reasons
Use によって → when sounding formal, or talking about systems, events, or objective facts
This does help however. I mean… ‘simple reasons’ is just way too vague to help in a pedagogical context. What constitutes a ‘simple reason’, it’s not something objective or which can be used as a reference.
Through investigation, a new truth was discovered.
It’s a simple reason here.
明日遊 びに行く為に、今日仕事を終わらせないといけない。
I have to finish my work today so that I can go out tomorrow.
So here I put によって and it didn’t work. So I’m pretty sure I don’t get the difference between the two, even with GPT’s explanation.
もう離婚しようと思う。なぜならもう愛を感じないから…。
I think I’m getting a divorce now. Because I don’t feel any love anymore…
I’ve been saying なぜなら during my Japanese tutoring to ask ‘why’ but she never corrected me, she usually does. I asked GPT and ‘why’ is なぜ. So I think I was just wrong and she never corrected me?
By the way, GPT can also extract text from images, you don’t need to use a website in particular anymore. Just copy/paste your screenshot and ask it to extract the text.
翻訳
駅で大事なことに気がついた。I realized something important at the station.
今日は日曜日だったのだ。Today is Sunday.
目覚まし時計が鳴らなかったのも、The alarm clock didn’t ring…
バスが平日の時刻表通りに来なかったのも、The bus didn’t come at the usual timetable…
今日が日曜日だからだったのだ。Was because today was Sunday.
よかった。I get it.
怒られないで済む。I didn’t end up angry.
しかし、ずいぶん無駄な心配をしてしまった。However, I wasted time worrying.
私は得をしたような、I learned something/I got something…
損をしたような複雑な気持ちで家までの道を30分歩いて帰った。I returned walked back home in 30 minutes with a complicated feeling of loss.
Here’s the extracted text from the image:
問 損をしたようなとあるが、なぜか。Why the feeling of loss.
1 急がなくてもいいのに急いでいろいろ心配してしまったから。Worried about things for no reason. ![]()
2 平日なのに日曜日だと思って寝坊をしてしまったから。![]()
3 余裕をもって会社に着けなくて上司から怒られてしまったから。
4 急いだのにバスも電車も来なくて会社に遅れてしまったから。


















