imho, I don't think we can, Fuzzybear, dear. But I do think we can come close.

Imagine each person as a circle. The circle is the individual's field of experiences, which is all that person's experiences, values, attitudes, beliefs, feelings, memories, etc.

In order to communicate, our circles have to overlap, and that area of overlap is the area of mutual understanding.

The understanding may be imperfect, but we get on as best we can with it being close enough.

And that's worth about two-cents.