01 Introduction
Updated 4 Oct 2026
Good Design
- Enhances user efficiency and effectiveness.
- Boosts engagement, satisfaction, and brand perception.
Bad Design
- Wastes time and money.
- Can lead to serious consequences—think medical errors, airplane failures, or even nuclear disasters.
Human-Computer Interaction (HCI) & Interaction Design (ID)
Interaction Design (ID)
- Focuses on creating intuitive, interactive experiences that fit naturally into daily and professional life.
Human-Computer Interaction (HCI)
- Studies how people use digital systems and how to improve that interaction.
- Includes research, prototyping, and usability testing.

How HCI and ID Connect
- แล้วมันเกี่ยวกันยังไงล่ะ?
- The boundaries between HCI and ID are increasingly blurred.
- ID can be seen as an evolution of HCI, expanding beyond digital systems to influence all forms of interaction.