YOU SAID:

This seemed like a good idea in principle, but it's probably going to be ridiculously stupid in practice.

INTO JAPANESE

これは原則としては良い考えのように思えましたが、実際にはとんでもないほど愚かになるでしょう。

BACK INTO ENGLISH

This seemed like a good idea in principle, but it would actually be ridiculously stupid.

INTO JAPANESE

これは原則としては良い考えのように思えたが、実際にはとんでもなく馬鹿げている。

BACK INTO ENGLISH

This seemed like a good idea in principle, but it's actually ridiculous.

INTO JAPANESE

これは原則として良いアイデアのように思えたが、実際にはばかげている。

BACK INTO ENGLISH

This seemed like a good idea in principle, but it's actually ridiculous.