Combined, their ideas form the core of modern interaction design: using technology to solve problems, but always keeping humans at the center.

Ada’s prediction that “machines could create art” has become a reality. Designers now use AI to generate sketches, color schemes, and even interactive prototypes.

Lillian’s research in human factors directly influenced Apple products, such as the pressure feedback in Mac trackpads, which significantly reduces finger fatigue, or iOS’s “Shortcuts,” which automates tasks to minimize steps.

Lovelace was actually considered the first computer programmer. Even though she was deeply involved in computers and their field, she believed in creativity. She believed that machines had way more potential than just calculation, envisioning them as tools for creativity such as the arts, music or painting. This was unheard of at her time, so for her to believe so strongly for technology to evolve in this way was inspiring. 

Gilbreth, on the other hand, helped study and understand how people interact with tools. Specifically focusing on human needs and experiences. She instead focused on designing tools for efficiency and usability, helping users greatly. Even today her work inspires putting the users needs first and working around their problems. 

In conclusion, although their fields were different, both contributed to shaping human-centered technology. Both of these women show us how good design requires both functionality, usability, and how users experience and interact. Lovelace imagined how machines could go beyond simple calculations and inspire creativity which is exactly what Interaction Designers do, bridging the gap between design and technology and users. Gilbreth’s focus on ergonomics and usability pushes the comfort and usefulness of a product, why should a user use it in the first place? It fills the need to understand what the user wants and why. Together, their work bridges the gap between technology and human interaction. 

Lovelace as a computer programmer, didn’t just write an algorithm—she imagined how machines could go beyond calculations to create art, music, and even aid human creativity. To me, that’s what interaction design is all about: making technology intuitive, expressive, and seamlessly integrated into human life. Meanwhile, Gilbreth approached design from a behavioral perspective, studying how people interact with their environments to improve efficiency and well-being. Her work in ergonomics and usability mirrors the same principles we use in IXD today—observing users, identifying pain points, and designing solutions that feel natural.

So what makes them essential to IXD history isn’t just their technical contributions, but their way of thinking—a balance of logic and creativity, science and empathy. Lovelace and Gilbreth remind me that great design isn’t just about solving problems; it’s about understanding people. Their contributions are a testament to why interaction design exists in the first place—to bridge the gap between technology and human experience.

Gilbreth was more focused on efficiency and the overall design of spaces and tools to make them usable, thus satisfying human needs. These concepts remain important in expanding human interaction as they work to change and fulfill modern-day human needs, making them important figures in the history of technology.

Whether through computational thinking or human-centered design approaches, the principles of both women were paramount in modern interaction design, all her accentuated the role of technology in enhancing human capabilities.

Lillian Gilbreth made user centered designs before computers existed. She studied how people moved and interacted with environment, which led to designs such as the kitchen work triangle. Her focus on simplifying tasks influenced modern IXD principles.

Lovelace and Gilbreth showed how technology should be built around people needs.

Ada Lovelace’s role as a female pioneer in a field where women have been undervalued, “she has inspired plays and novels written by the likes of such luminaries as Tom Stoppard and Arthur C. Clarke.” In the field of computers, there are many women who have devoted their lives to the field but remain unknown, except for Ada, who has a computer language named after her; it is used primarily for military and aerospace applications. Maybe Ada wasn’t the first computer programmer (Babbage), but her accomplishments need to be known.

“When it came to finding a good job, men needed the help of this honor more than women did.”“The professor she had hoped to work with did not allow women to attend his lectures. ”I was heartbroken when I read this.Lillian Gilbreth, as a pioneer of User- Centered Lillian Gilbreth, a pioneer of User-Centered Design, was treated this way in her early years. Advanced ideas like the pioneering practice of interdisciplinary approaches are now being promoted in interaction design.

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.