Interpersonal communication occurs between people and exists on a continuum from impersonal to personal. It involves developing identities and relationships through shared experiences, building trust, and exchanging ideas. The development of human culture relies on our ability to share experiences, build trust, exchange ideas, and transmit knowledge through various communication methods that have evolved over time, from early cave paintings and smoke signals to modern technologies like smartphones and social media. Effective interpersonal communication allows us to coordinate efforts, have impact on issues, and work out problems together.