Product Thinking & Customer Behavior
Agile teams thrive by focusing on value, but value is subjective. These laws help teams think like product strategists, understand what motivates customers, and distinguish between demand, satisfaction, and usability. By applying these principles, teams prioritize what matters, design with empathy, and align delivery with real-world outcomes and evolving customer needs.
Jobs-To-Be-Done Framework
Focuses on the progress users seek by "hiring" a product to fulfill a specific job in their life.
Law of 3
Highlights the cognitive power of offering three focused options.
Golden Circle
Centers team purpose by focusing on Why before How or What .
Kano Model
Helps categorize customer needs into basic, performance, and delight factors.
Pareto Principle (80/20 Rule)
80% of outcomes come from 20% of inputs.
Fitts' Law
Describes the speed-accuracy tradeoff in human interactions with UI elements.
Zeigarnik Effect
People remember uncompleted tasks better than completed ones.
Law of Triviality (Bike Shed)
People give disproportionate weight to trivial issues over complex ones.
Lindy Effect
Things that have lasted tend to continue lasting.
Miller's Law
People can hold about 7±2 items in working memory.
Shalloway's Law of Requirements
Requirements that can be misunderstood will be.
Krug's First Law of Usability
"Don't make me think" - the core principle of intuitive design.
Van Rest's Law
Most users only read 20% of content on a page.