  A clear conception of phenomenology awaited Husserl’s development of a clear model of intentionality. Indeed, phenomenology and the modern concept of intentionality emerged hand-in-hand in Husserl’s Logical Investigations (1900–01). With theoretical foundations laid in the Investigations, Husserl would then promote the radical new science of phenomenology in Ideas I (1913). And alternative visions of phenomenology would soon follow.