  In Ideas I Husserl presented phenomenology with a transcendental turn. In part this means that Husserl took on the Kantian idiom of “transcendental idealism”, looking for conditions of the possibility of knowledge, or of consciousness generally, and arguably turning away from any reality beyond phenomena. But Husserl’s transcendental turn also involved his discovery of the method of epoché (from the Greek skeptics’ notion of abstaining from belief). We are to practice phenomenology, Husserl proposed, by “bracketing” the question of the existence of the natural world around us. We thereby turn our attention, in reflection, to the structure of our own conscious experience. Our first key result is the observation that each act of consciousness is a consciousness of something, that is, intentional, or directed toward something. Consider my visual experience wherein I see a tree across the square. In phenomenological reflection, we need not concern ourselves with whether the tree exists: my experience is of a tree whether or not such a tree exists. However, we do need to concern ourselves with how the object is meant or intended. I see a Eucalyptus tree, not a Yucca tree; I see that object as a Eucalyptus, with a certain shape, with bark stripping off, etc. Thus, bracketing the tree itself, we turn our attention to my experience of the tree, and specifically to the content or meaning in my experience. This tree-as-perceived Husserl calls the noema or noematic sense of the experience.