For me, the joy is the coming upon the unexpected, based on
an unplanned path from one thing to the next to the next.
Maybe everyone has taken a vacation and remembers a special thing
that was not even remotely expected in their planned agenda.
Let me give another example...
My family moved into an old house in Buffalo NY, and I set about cleaning the attic.
I found some old posters about the local women's suffrage movement,
and this led me to the Chautauqua movement in western NY.
Later, on a sight-seeing trip near Lake Chautauqua I came across a museum about the chautuaquas.
Inside I learned the building was originally one of the Carnegie Libraries.
There I learned the history and impact the Carnegie Libraries
had and are still having in the US.
And whatever impression you may have of libraries and librarians,
such as open stacks, free lending, etc., it probably comes from Andrew Carnegie.
Who knows... one of the
Carnegies may be near you !