Why did this native speaker replace から with ので?


A Japanese student wrote the following text over Hellotalk to have it
corrected by a native speaker: 「ビデオでみた。安いから日本に有名ですと言っていました。」

The native speaker corrected it as: 「安いので日本で有名だとテレビで言っていました。」

Every item in the correction makes sense to me, except for the choice to
replace から with ので. I know から and ので can overlap significantly, but I'm not
familiar enough with the tiny nuances to determine what may have went through
the native speaker's brain as this choice was made. Is there any useful
insight on this?




First off, for the particular examples, I don't think there is any difference
between 安いから/安いので.

* * *

If forced to give a vague reason, the following may be relevant.

Consider

  1. アップル製品は高いから有名である
  2. アップル製品は高いので有名である

Both may not be most natural things to say, but 1 is definitely odder than 2
(even if apple products are both famous and expensive), in the same way (I
think) in English 3 is odder than 4

  3. Apple products are famous because they are expensive
  4. Apple products are notorious for being expensive

(I guess 4 is fairly okay, which is not exactly true of Japanese 2 above).

So ので can refer to the aspect/factor **for** which the thing is famous, but から
sounds more like a cause (being expensive isn't a cause for being famous).

Back to the ones in question, 安いので sounds **like** _for being cheap_ whereas
安いから sounds _because it's cheap_. In the particular example, both work, but
_famous for being cheap_ is kind of plausible and that's why the corrector
made the correction - subconsciously. (Again, note that 安いから/安いので are
virtually interchangeable)

* * *

I haven't read fully but the following may contain something.

  * [「～から」と「～ので」](https://www.tomojuku.com/blog/karanode/)

