According to Heidegger, the human person (Dasein) is fundamentally a being-in-the-world. Dasein understands itself through its interactions and engagement with the world. Dasein's existence is disclosed through its moods and ability to understand, which reveal Dasein's possibilities. Intersubjectivity is possible because Dasein exists in a world with other Daseins. Dasein is also historical - it is constituted by its past experiences and traditions which shape its future possibilities. Understanding the human person through temporality, care, and historicity provides insights into Dasein's intersubjective nature.