Some people can see the trees very well but they have no idea
what the forest looks like and because they know very well, one
tree, they think they know the forest. When they try to talk about
the forest, they become very stupid because all they can talk about
is the tree.
They use what they from knowing one tree to argue with people about
the forest that they have no idea of.
They make a fool of themselves arguing with people about the
forest, because they think that just because they know the tree,
they know the forest.