The first chapter of the Human-Technology Interaction book offers an in-depth exploration of the evolving relationship between humans and technology, with a particular focus on the rise of ubiquitous computing over the last three decades. It emphasises the “fourth wave” of HTI research, which investigates the complex entanglements of humans and machines, introducing key concepts such as “symbiosis” and “materiality” to explain this integration. A major theme in the chapter is the critique of the traditional human-centred design (HCD) approach, which has dominated HTI for years. While HCD has improved usability and ergonomic design, the chapter argues it is insufficient for addressing contemporary challenges like global sustainability and ethical concerns. In response, the chapter advocates for a shift towards a “more-than-human” perspective, expanding the design focus to include the needs of environmental and non-human actors. This new approach seeks to create a more interconnected view of HTI, balancing short-term usability with long-term ecological and ethical impacts. By incorporating participatory design and socio-technical systems theory, the chapter proposes a reimagined HTI framework that addresses both immediate human needs and the broader consequences for non-human entities and ecosystems.