Linc Asked: "I must create in my mind the exact experience you
   are having, or I have no understanding on what you are
   experiencing (feeling or understanding) .
   I am isolated and can only understand others by what I can
   recreate in my own mind's experience."
   Yes.
   It is possible, however. There are vehicles in common use for
   it.
   One of which is agreement. Of course there are levels of
   agreement.
   At the moment of true agreement, all persons are of "like mind".

   Another is music. I don't remember where I read it, but
   apparently brain scans of people absorbed in the same piece of
   music have identical brainwave patterns for that period of time.
   They have a shared experience.

   Movies / TV / entertainment. Shared laughter is big, as it
   shared sadness and other emotions to different degrees.

   I'm not so sure about art.

   Writing is a big one as well. You especially find this in
   fiction. People who have read the same well written books are
   often of like-mind and find experiences in common and mutual
   understanding of each other's ways of thinking.

   Hobbies are another way. Common hobbies for girls/women are
   fashion / clothing/shoes/etc. I wouldn't underestimate the
   incredible power that fashion and branding and all of the
   marketing things actually _have_ on people.

   People with less social hobbies that are more individual in
   nature, though, also can be of like-mind and have shared
   experience and comprehension.

   Sports also, at least with regards to the cheering and jeering,
   perhaps not so much the gossipy side of sporting.

   Religions and ideologies I think have somewhat less of an effect
   in sharing understanding, except when they are at their most
   purest form; the eureka of a scientist, the "beautiful formula"
   discovery of a mathematician, the flow of prayer and meditation
   moment.

   So, yes it's not only possible, but commonplace.

   Finding those of like mind for one's self however, can be tricky
   if one isn't a "joiner" I think. AT least, for me, that's been
   my difficulty, but I keep searching for what I refer to as "my
   people" or "my clan" and I find them here and there... alternate
   "me's" I call them. [no, they're not "me" - they're uniquely
   them.. but rather it's me's that I could have been or could be,
   given different circumstances]