We should also be clear about what the AI is doing. Like if an app uses AI to suggest mental health advice, users should know it’s not a real doctor and understand where the info comes from. People deserve to know how their data is being used—like if an app is tracking what they click on or say.

We also have to be careful not to design things that only work well for certain people. For example, if a voice assistant only understands certain accents, that’s not fair to others. Good design should be for everyone. So our responsibility is to make smart tools that are helpful, honest, and respectful to all kinds of users.

When Web 2.0 came, everything changed. People could now interact with websites. You could write comments under blog posts, post pictures on social media, like your friend’s vacation photos, or even edit a shared document. Everyday apps like YouTube, Facebook, and Instagram let users become creators, not just viewers. This meant websites had to add buttons, forms, likes, shares, menus, and more. Designers needed to think carefully: “What happens when someone clicks here?” or “How can we show them this action worked?” As a design student, I realize good interaction design helps people feel confident and in control.

Today, things have gone even further. We now use smartphones, voice assistants, and smart watches. People swipe, tap, scroll, or even talk to their devices. Design now has to think about different screens, fast feedback, and keeping things simple. But the core idea hasn’t changed: making it easy and fun for people to use technology in daily life.

The iPod was one of the first devices to let people carry thousands of songs in their pocket. Its design was simple, with a click wheel that made it easy to scroll through songs quickly. People could listen to music anywhere—on the bus, while walking, or at the gym. This changed how people thought about music and technology. It wasn’t just something you used at home anymore—it became something you carried with you all the time. The iPod showed that interaction design could make technology more enjoyable and personal.

Later, the iPhone took this idea even further. It combined a phone, iPod, camera, and web browser into one device with a touchscreen. People could tap, swipe, and pinch to control it instead of using buttons. This type of interaction felt more natural and intuitive. The iPhone also introduced the App Store, which let users download different tools and games that matched their needs. Suddenly, people weren’t just using a few basic programs—they were using apps for everything from maps to health to shopping. This made interaction design even more important because apps needed to be easy to understand and use for everyone.

As someone born in the early 2000s, I grew up with these devices. I remember how exciting it was to use an iPhone for the first time. I learned to use touchscreen gestures like swiping and tapping at a young age, so they feel completely natural to me. These experiences shaped the way I think about technology today. I believe good interaction design should feel simple, even if the technology behind it is complex. It should help people do what they want without frustration.

Studying interaction design, I now understand how much thought goes into making these experiences smooth and human-friendly. The iPod and iPhone are great examples of how design can change people’s behavior and expectations. Because of them, users today expect all technology to be easy to use, responsive, and visually clear.

As technology has advanced, so have the demands and capabilities of user interfaces. Modern GUIs are far more visually appealing and interactive, with the integration of touch inputs, voice control, and gesture recognition. The rise of mobile devices has led to interfaces designed for touch, minimizing the reliance on the keyboard and mouse used in traditional desktop environments.

In terms of improvements, as machine learning and AI technologies evolve, there is a significant opportunity to tailor GUIs to individual user preferences and usage patterns, making interactions more intuitive and efficient.

Modern interaction design deeply incorporates these principles. Designers now regularly conduct user research through methods like ethnography, usability testing, and iterative prototyping to capture real user experiences and feedback. Products are frequently updated based on this ongoing user input, ensuring they remain relevant and effectively meet users’ needs over time.

The Xerox Star’s influence also extends into current web and app design, where the principles of direct manipulation and visual feedback continue to guide user experience. For example, when you adjust settings on your smartphone or interact with a touchscreen kiosk, you are experiencing the direct manipulation of graphical elements—a concept pioneered by the Star. These elements respond visually to your touch or click, providing immediate feedback that makes the interface feel responsive and intuitive. By using visual cues and easy interactions, designers create digital experiences that are more engaging and easier to understand, thus enhancing usability and accessibility for everyone.

This demo had so many new ideas that it shaped the future of how we interact with technology. For example, the mouse made it much easier and more natural to point and click on things on a computer screen, which is something we still do all the time today.

Engelbart’s innovations laid the groundwork for the graphical user interfaces that we see on almost every device now, from smartphones to tablets to laptops. His idea of making technology more interactive and user-friendly is a core principle of today’s design philosophy. We see its influence in how apps and websites are designed to be intuitive and accessible, focusing on user experience. This makes sure that technology not only performs well but also fits smoothly into our daily lives and tasks, making complex tasks simpler and more enjoyable.

Spotify uses the Gestalt principle of similarity to help users intuitively navigate the app. Elements like song tracks, playlists, and albums are represented with similar visual styles such as consistent font sizes, colors, and layout structures. This similarity signals to the user that these elements function in comparable ways, making the interface easier to use without confusion.

Spotify adheres to Fitts’s Law by designing easily clickable areas for their play, pause, and skip buttons. These controls are larger than less frequently used buttons (like shuffle or repeat) and are centrally located at the bottom of the app where users can easily reach them without stretching their thumbs too far on mobile devices.

By understanding and observing how Spotify integrates these principles, I can see how effective UX design can guide and ease user interaction, making the experience enjoyable and efficient.
Starting with Gestalt principles, I would focus on how elements are grouped together. For example, I’d use the principle of proximity to place related buttons or features close to each other. Incorporating Fitts’s Law, I’d ensure that important interactive elements are larger and placed in easily accessible locations. This means designing buttons that users frequently click to be bigger and closer to where their mouse cursor or finger is likely to be. In order to reduce the effort and time needed to interact with these elements.

On the other hand, the heart in Egyptian hieroglyphics had a wider and deeper meaning. Egyptians saw the heart as the center of emotions, thoughts, and the soul. The image of the heart looked like a small jar. In the afterlife, the heart was very important, and people believed it was weighed against a feather to decide one’s fate in the next life.

The metaphors used are different. In the iOS app, the heart stands for health and vitality, directly linked to medical and physical health. In Egyptian culture, the metaphor of the heart reached into moral character and the essence of life and the afterlife, symbolizing a deep connection between physical existence and spiritual morality. But I think they also have similarities. The heart icon in the app corresponds to the location of the human heart; in Egyptian culture, the heart is expressed as a small jar that can hold things like emotions, thoughts, and the soul, which means that they both have some realistic elements.

However, both Lovelace and Gilbreth were way ahead of their time, and they didn’t get to see all the results of their ideas because the technology back then wasn’t advanced enough. Lovelace never got to see her Analytical Engine come to life because the right technology wasn’t around. Similarly, many of Gilbreth’s ideas for better workplace design couldn’t be fully achieved because the industrial technology back then was too limited.

Ada Lovelace and Lillian Gilbreth really helped start what we now call interaction design. They were thinking way into the future and their work has given them a special spot in the history of computing. They showed us how important it is to consider human needs when designing technology, which is something we still focus on in IXD today.