In addition to present-at-hand and ready-to-hand there is a third mode for Dasein, being-with, that is essential to Dasein. For example, a field that we may carefully walk around so as not to damage the crops or compact the soil, is ready-to-hand but shows itself also as belonging to someone and cared for by someone. We do not just add this person, ""in thought,"" to the field we see because the farmer(s) already show themselves with the field through its improvements as the object of their care. Likewise, we may hear a scream, not as a noise or a sense-datum, but as someone in distress.