This phrase means "it's not always true that..." or "it doesn't mean that...". You use it to say that a common idea is not always correct.
Clause + というものではないPrimary
This phrase means "it's not always true that..." or "it doesn't mean that...". You use it to say that a common idea is not always correct.
努力すれば必ず成功するというものではない。
It's not the case that you will definitely succeed just because you work hard.
高ければ良いというものではないので、機能性も考慮しましょう。
It's not necessarily good just because it's expensive, so let's consider the functionality as well.
有名だからといって、その人が常に親切だというものではない。
Just because someone is famous doesn't mean they are always kind.
当時の判断が間違いだったというものではなかったが、もっと良い方法があったかもしれない。
It wasn't that the decision at the time was a mistake, but there might have been a better way.
法律で禁止されていないからといって、何でもしていいというものではない。
Just because it's not forbidden by law doesn't mean you can do whatever you want.
This phrase is like saying, "That's not quite right." You use it to correct a simple idea. You show that the truth is more detailed or different.
This is different from "〜というものだ". That phrase says something is always true. This phrase says it is not always true. It is also different from "〜というわけではない". This phrase denies a general rule. It sounds more like a deep thought. "〜というわけではない" denies a specific idea.
Don't use this when stating a simple fact. For example, you can't say "The sky is not blue" with this grammar. You use this when you want to disagree with a general idea. This idea is something people might argue about. It is not a simple fact. You can use it to say, "Just because the sky is blue doesn't always mean it will be sunny." This shows you disagree with a common thought.
Often confused with(1)
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