그 원인에 대해 각자 자기에게 익숙한 것만을 옳다고 보고 자신의 치우친 견해만을 내세워 다투고 있기 때문이라고 생각했다.
As for the cause, I thought it was because they were arguing with only their biased views, arguing that only what they were familiar with was right.