expression, ichidan verb
become overly logical; split hairs
Used when someone gets stuck in excessive logic, losing sight of practicality or common sense. Often carries a negative nuance of being pedantic or hairsplitting.
彼は議論になるとすぐ理に落ちてしまう。
He quickly becomes overly logical when it comes to arguments.
理に落ちすぎて、かえって話が通じ
He got so caught up in splitting hairs that we couldn't communicate anymore.