reasoned

1. ADJ A reasoned discussion or argument is based on sensible reasons, rather than on an appeal to people's emotions. (討論或觀點(diǎn)) 縝密的; 理由充分的[表贊許]

Their opinions are not based on reasoned argument. 他們的意見不是以縝密的推斷為基礎(chǔ)的。