Photos are a great example of sharing emotion. Think about
the pictures the average family takes: The subjects are people
and places that they care about—family and friends, places
they visited, etc. The activities pictured add more detail to a
child’s birthday party, a friend’s graduation, or scuba diving on
that Caribbean vacation.
Now think about what you do after you get the pictures
developed (assuming you don’t leave the film in a drawer for a
year). The natural inclination is to show others. Why do we do
it? To share the emotions that we felt when the pictures were
taken. Whether you were there when the picture was taken or
not, you’re still fair game when those pictures come back from
the photo lab.