noun
argument based on personal impressions; impressionistic argument
Used when someone's reasoning relies on subjective feelings rather than objective evidence. Often carries a critical tone.
彼の意見は印象論に過ぎない。
His opinion is nothing more than an argument based on personal impressions.
印象論ではなく、データに基づいた議論をしよう。
Let's have a discussion based on data, not on personal impressions.
Compound of 印象 (impression) and 論 (argument, theory).