sound argument; clever presentation
Refers to an excellent, well-reasoned argument or a brilliant way of presenting ideas. Somewhat formal and literary.
The audience was deeply impressed by his sound argument.
That paper is a clever presentation that gets to the heart of the issue.
Composed of 卓 (excellent, eminent) and 論 (argument, theory). The exact historical derivation is uncertain, but the kanji combination directly suggests 'outstanding argument'.