If as a child you did not feel heard or validated. If you perceived that your view had no real significance than you most likely felt that you were invisible. That sense of insignificance has followed you into adulthood. To feel visible does not mean we must agree it simply says that we are able to display sincere respect to hear the other person or to be heard by another.

"When we convey love, appreciation, empathy, acceptance, and respect we make others visible." Nathaniel Branden--The Six Pillars of Self-Esteem

One of the greatest gifts we can give a child and a human being is a sense of visibility. We don't have to agree with all but we should be willing to hear all one has to say.