I experience art most powerfully when I sense its authenticity. That is, when I feel and think something has been expressed and conveyed honestly. This is perhaps why, when I see, understand, hear, or touch something that is not perfectly made, a work of art can maintain its integrity and appeal.
Take a painting by a child that reveals their happiness, beautifully. Such a painting is of no less value or insight to that of mine expressing my joy.
When art works we sense its truth.