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UI-UX Design Tool-independent • Chapter 2

Problem Definition

Every topic includes a plain-language explanation, exact steps, 10 practical examples, a hands-on example, expected output, common mistake, and practice task.

5 topics50 examples5 hands-on tasks10 Q&A
Practical course

2.1 Business Problem

Business Problem is a UI/UX design skill that helps make products easier to understand, use, test, and improve. The method should be tied to a real user problem instead of decoration alone.

Step by step

  1. Define the user problem connected to Business Problem.
  2. Collect evidence before jumping to a polished solution.
  3. Create the smallest flow, sketch, wireframe, prototype, or test needed to answer the question.
  4. Test the design with realistic content, states, and device constraints.
  5. Record what you learned and change the design based on evidence rather than preference.

10 practical examples

  1. Apply Business Problem to a course website and explain the decision you made.
  2. Apply Business Problem to a online store and explain the decision you made.
  3. Apply Business Problem to a banking app and explain the decision you made.
  4. Apply Business Problem to a school portal and explain the decision you made.
  5. Apply Business Problem to a clinic booking system and explain the decision you made.
  6. Apply Business Problem to a dashboard and explain the decision you made.
  7. Apply Business Problem to a restaurant site and explain the decision you made.
  8. Apply Business Problem to a mobile app and explain the decision you made.
  9. Apply Business Problem to a creator site and explain the decision you made.
  10. Apply Business Problem to a business landing page and explain the decision you made.

Hands-on example

UI/UX PRACTICE
Problem: A user struggles with Business Problem.
Evidence to collect: interview, observation, analytics, or usability result.
Artifact: flow, sketch, wireframe, prototype, or test plan.
Success measure: task completion, clarity, error reduction, or satisfaction.
Next step: test one assumption.

Expected output

A user-centered design artifact for Business Problem plus a clear statement of what evidence would confirm or reject the design decision.

Common mistake: Treating Business Problem as a visual preference instead of connecting it to a user need, constraint, or testable outcome.

Practice exercise

Create a fresh example for Business Problem using a different product, screen, component, or content set. Explain what changed and why.

2.2 User Problem

User Problem is a UI/UX design skill that helps make products easier to understand, use, test, and improve. The method should be tied to a real user problem instead of decoration alone.

Step by step

  1. Define the user problem connected to User Problem.
  2. Collect evidence before jumping to a polished solution.
  3. Create the smallest flow, sketch, wireframe, prototype, or test needed to answer the question.
  4. Test the design with realistic content, states, and device constraints.
  5. Record what you learned and change the design based on evidence rather than preference.

10 practical examples

  1. Apply User Problem to a course website and explain the decision you made.
  2. Apply User Problem to a online store and explain the decision you made.
  3. Apply User Problem to a banking app and explain the decision you made.
  4. Apply User Problem to a school portal and explain the decision you made.
  5. Apply User Problem to a clinic booking system and explain the decision you made.
  6. Apply User Problem to a dashboard and explain the decision you made.
  7. Apply User Problem to a restaurant site and explain the decision you made.
  8. Apply User Problem to a mobile app and explain the decision you made.
  9. Apply User Problem to a creator site and explain the decision you made.
  10. Apply User Problem to a business landing page and explain the decision you made.

Hands-on example

UI/UX PRACTICE
Problem: A user struggles with User Problem.
Evidence to collect: interview, observation, analytics, or usability result.
Artifact: flow, sketch, wireframe, prototype, or test plan.
Success measure: task completion, clarity, error reduction, or satisfaction.
Next step: test one assumption.

Expected output

A user-centered design artifact for User Problem plus a clear statement of what evidence would confirm or reject the design decision.

Common mistake: Treating User Problem as a visual preference instead of connecting it to a user need, constraint, or testable outcome.

Practice exercise

Create a fresh example for User Problem using a different product, screen, component, or content set. Explain what changed and why.

2.3 Constraints

Constraints is a UI/UX design skill that helps make products easier to understand, use, test, and improve. The method should be tied to a real user problem instead of decoration alone.

Step by step

  1. Define the user problem connected to Constraints.
  2. Collect evidence before jumping to a polished solution.
  3. Create the smallest flow, sketch, wireframe, prototype, or test needed to answer the question.
  4. Test the design with realistic content, states, and device constraints.
  5. Record what you learned and change the design based on evidence rather than preference.

10 practical examples

  1. Apply Constraints to a course website and explain the decision you made.
  2. Apply Constraints to a online store and explain the decision you made.
  3. Apply Constraints to a banking app and explain the decision you made.
  4. Apply Constraints to a school portal and explain the decision you made.
  5. Apply Constraints to a clinic booking system and explain the decision you made.
  6. Apply Constraints to a dashboard and explain the decision you made.
  7. Apply Constraints to a restaurant site and explain the decision you made.
  8. Apply Constraints to a mobile app and explain the decision you made.
  9. Apply Constraints to a creator site and explain the decision you made.
  10. Apply Constraints to a business landing page and explain the decision you made.

Hands-on example

UI/UX PRACTICE
Problem: A user struggles with Constraints.
Evidence to collect: interview, observation, analytics, or usability result.
Artifact: flow, sketch, wireframe, prototype, or test plan.
Success measure: task completion, clarity, error reduction, or satisfaction.
Next step: test one assumption.

Expected output

A user-centered design artifact for Constraints plus a clear statement of what evidence would confirm or reject the design decision.

Common mistake: Treating Constraints as a visual preference instead of connecting it to a user need, constraint, or testable outcome.

Practice exercise

Create a fresh example for Constraints using a different product, screen, component, or content set. Explain what changed and why.

2.4 Assumptions

Assumptions is a UI/UX design skill that helps make products easier to understand, use, test, and improve. The method should be tied to a real user problem instead of decoration alone.

Step by step

  1. Define the user problem connected to Assumptions.
  2. Collect evidence before jumping to a polished solution.
  3. Create the smallest flow, sketch, wireframe, prototype, or test needed to answer the question.
  4. Test the design with realistic content, states, and device constraints.
  5. Record what you learned and change the design based on evidence rather than preference.

10 practical examples

  1. Apply Assumptions to a course website and explain the decision you made.
  2. Apply Assumptions to a online store and explain the decision you made.
  3. Apply Assumptions to a banking app and explain the decision you made.
  4. Apply Assumptions to a school portal and explain the decision you made.
  5. Apply Assumptions to a clinic booking system and explain the decision you made.
  6. Apply Assumptions to a dashboard and explain the decision you made.
  7. Apply Assumptions to a restaurant site and explain the decision you made.
  8. Apply Assumptions to a mobile app and explain the decision you made.
  9. Apply Assumptions to a creator site and explain the decision you made.
  10. Apply Assumptions to a business landing page and explain the decision you made.

Hands-on example

UI/UX PRACTICE
Problem: A user struggles with Assumptions.
Evidence to collect: interview, observation, analytics, or usability result.
Artifact: flow, sketch, wireframe, prototype, or test plan.
Success measure: task completion, clarity, error reduction, or satisfaction.
Next step: test one assumption.

Expected output

A user-centered design artifact for Assumptions plus a clear statement of what evidence would confirm or reject the design decision.

Common mistake: Treating Assumptions as a visual preference instead of connecting it to a user need, constraint, or testable outcome.

Practice exercise

Create a fresh example for Assumptions using a different product, screen, component, or content set. Explain what changed and why.

2.5 Problem Statement

Problem Statement is a UI/UX design skill that helps make products easier to understand, use, test, and improve. The method should be tied to a real user problem instead of decoration alone.

Step by step

  1. Define the user problem connected to Problem Statement.
  2. Collect evidence before jumping to a polished solution.
  3. Create the smallest flow, sketch, wireframe, prototype, or test needed to answer the question.
  4. Test the design with realistic content, states, and device constraints.
  5. Record what you learned and change the design based on evidence rather than preference.

10 practical examples

  1. Apply Problem Statement to a course website and explain the decision you made.
  2. Apply Problem Statement to a online store and explain the decision you made.
  3. Apply Problem Statement to a banking app and explain the decision you made.
  4. Apply Problem Statement to a school portal and explain the decision you made.
  5. Apply Problem Statement to a clinic booking system and explain the decision you made.
  6. Apply Problem Statement to a dashboard and explain the decision you made.
  7. Apply Problem Statement to a restaurant site and explain the decision you made.
  8. Apply Problem Statement to a mobile app and explain the decision you made.
  9. Apply Problem Statement to a creator site and explain the decision you made.
  10. Apply Problem Statement to a business landing page and explain the decision you made.

Hands-on example

UI/UX PRACTICE
Problem: A user struggles with Problem Statement.
Evidence to collect: interview, observation, analytics, or usability result.
Artifact: flow, sketch, wireframe, prototype, or test plan.
Success measure: task completion, clarity, error reduction, or satisfaction.
Next step: test one assumption.

Expected output

A user-centered design artifact for Problem Statement plus a clear statement of what evidence would confirm or reject the design decision.

Common mistake: Treating Problem Statement as a visual preference instead of connecting it to a user need, constraint, or testable outcome.

Practice exercise

Create a fresh example for Problem Statement using a different product, screen, component, or content set. Explain what changed and why.

Chapter 2 review — 10 questions and answers

1. What is the main purpose of Business Problem?

Answer: Business Problem is a UI/UX design skill that helps make products easier to understand, use, test, and improve. The method should be tied to a real user problem instead of decoration alone.

2. What is a common mistake with Business Problem?

Answer: Treating Business Problem as a visual preference instead of connecting it to a user need, constraint, or testable outcome.

3. What is the main purpose of User Problem?

Answer: User Problem is a UI/UX design skill that helps make products easier to understand, use, test, and improve. The method should be tied to a real user problem instead of decoration alone.

4. What is a common mistake with User Problem?

Answer: Treating User Problem as a visual preference instead of connecting it to a user need, constraint, or testable outcome.

5. What is the main purpose of Constraints?

Answer: Constraints is a UI/UX design skill that helps make products easier to understand, use, test, and improve. The method should be tied to a real user problem instead of decoration alone.

6. What is a common mistake with Constraints?

Answer: Treating Constraints as a visual preference instead of connecting it to a user need, constraint, or testable outcome.

7. What is the main purpose of Assumptions?

Answer: Assumptions is a UI/UX design skill that helps make products easier to understand, use, test, and improve. The method should be tied to a real user problem instead of decoration alone.

8. What is a common mistake with Assumptions?

Answer: Treating Assumptions as a visual preference instead of connecting it to a user need, constraint, or testable outcome.

9. What is the main purpose of Problem Statement?

Answer: Problem Statement is a UI/UX design skill that helps make products easier to understand, use, test, and improve. The method should be tied to a real user problem instead of decoration alone.

10. What is a common mistake with Problem Statement?

Answer: Treating Problem Statement as a visual preference instead of connecting it to a user need, constraint, or testable outcome.