"Opinions that all members of society can agree about without explanation," were called "commonplace", and now are called "common sense." They change with the times. In other words, common sense includes understanding that it is relative. The psychiatrist says that what is important is that keeping an eye to every corner of society, people should "not be biased," and that many people are "sharing it" with other people. From "Common Sense Philosophy."
"January 15 2019
from “Oriori no Kotoba” by Kiyokazu Washida, The Asahi Shimbun"