The fact of existence comes before -- and so, necessarily, lies outside of -- knowledge. Existence is not an attribute of ourselves and so cannot be understood. This falling short in knowledge's reach (which can also be thought of as the gap between action and knowing) is a source of frustration. Knowing is a way for us to control the world, to bring it to heel. But action (even our own) can be autonomous, resisting knowledge.
Kierkegaard's concern was not to usurp action but to quell the anxiety of the person who cannot explain his own existence. He advises us to fill that gap with Faith. Only Faith can bridge the gulf between the bounds of our knowledge and the fact of our existence.
Yet displacement allows us to separate knowing from Being. It is a kind of de-objectifying or de-representing of our lives. It moves knowing into another world (World 2.0, say). The usurping tendencies have been displaced not eliminated. What we are left with is our undifferentiated existence in World 1.0 . There is no need to "know" anything about our being.
