How do we humans and robots/AIs behave, feel, and interact in the complex worlds? While technologies and artifacts are to be understood in their specific natural, social, and cultural contexts, intelligent agents form a particular category in terms of both expectation toward and perception of them. First, they are thought to be (or expected to be) partly capable of exploring their environments and interacting with other objects, artifacts and living beings, namely, they have (semi-)agency. Also, they are thought to be (or expected to be) partly capable of interpreting and producing essential elements of communications., which would be based on or eventually lead to experience like those we feel, namely, they have (semi-)personal experience. Further, with or without agency and personal experience, they are thought to be (or expected to be) serve as social interfaces and mirror images of humans, which somehow drive us to produce robots and AIs that resemble human bodies or emulate characteristics of a human appearance and behavior. In this talk, I would like to illustrate both explicit and implicit aspects are important to understand human-human and human-machine interactions.