I don't think so. Even with the "same" experiences we all have different backgrounds, ages, surroundings. I remember my T being attracted to a phrasing of mine when I commented that I had grown up "alongside" my brothers. But even with us all there "together" we didn't have the same experiences because of our different sexes, ages, backgrounds, etc. Memories are very different too so what is important to me and what I remember is totally different from what was important to any of my siblings, etc.

But I don't think it's important to "know" another's reality as we are "part of" each other's reality. But we all have to live only our own lives; it's a little bit like we're the only ones in the world and everyone else has bit parts in our play :-) But what you make of me or what I make of you is determined by and important only to the maker.