Most calculator and quiz tools provide at least one or more of the following services: converting inputs, predicting the future, or providing recommendations.

Calculators and quizzes provide personalized information. Users approach these tools with an exploratory mindset and appreciate them while making decisions.

To prevent failure and make our designs more resilient, we need to explore edge cases and exceptions already during the design process. Let’s take a closer look at what to watch out for.

Traditional methods for accessibility have been tried for 30 years without substantially improving computer usability for disabled users. It’s time for a change, and AI will soon come to the rescue with the ability to generate a different user interface for every user, optimized for that person’s unique needs.

In a distracted environment, the best form of smartphone interaction is a high-speed, easy-to-use one. Luke calls the typical mobile usage a "one thumb, one eyeball" experience, since the highly distracted environment causes most mobile users to engage in one-handed use with short spans of partial attention.