In the same way that books are signposts, wine is portal.
The interesting thing is that, in today's modern technology, text are immutable, while wines evolve. It didn't uesed to be that way. Before Gutenberg, scripts were copied by hand, so scripture accuracy had a deterious affect similar to wine. It was estimated in 1756 that the 200 New Testament renditons available contained 30,000 significant discrepencies.
I like it that wine evolves. It can be thought of as a four-dimensional sculpture that has a dimension in time, and every bottle has a a different trajectory. It's Einstein's vision in art.