What is the ambiguity of the black veil?

The ambiguity of the black veil is that it covers the
minister's face from both good and evil. Although he is mourning the lost innocence and
kindness of the world overall, the reality is that he cannot be seen, and is not being
heard. Therefore, any kind of assumption could come up as far as the minister's thoughts
and feelings yet, they are impossible to be ascertained precisely due to the veil. The
veil also represents detachment from reality, and separation from the rest of the world.
The color is one and the same, it is solid, and it is meant to hide him. It is ambiguous
precisely because of its purpose of hiding the minister and make him inaccessible to the
rest of the congregation.