15.1 Single Task
Single Task 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
- Define the user problem connected to Single Task.
- Collect evidence before jumping to a polished solution.
- Create the smallest flow, sketch, wireframe, prototype, or test needed to answer the question.
- Test the design with realistic content, states, and device constraints.
- Record what you learned and change the design based on evidence rather than preference.
10 practical examples
- Apply Single Task to a course website and explain the decision you made.
- Apply Single Task to a online store and explain the decision you made.
- Apply Single Task to a banking app and explain the decision you made.
- Apply Single Task to a school portal and explain the decision you made.
- Apply Single Task to a clinic booking system and explain the decision you made.
- Apply Single Task to a dashboard and explain the decision you made.
- Apply Single Task to a restaurant site and explain the decision you made.
- Apply Single Task to a mobile app and explain the decision you made.
- Apply Single Task to a creator site and explain the decision you made.
- Apply Single Task to a business landing page and explain the decision you made.
Hands-on example
UI/UX PRACTICE
Problem: A user struggles with Single Task.
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 Single Task plus a clear statement of what evidence would confirm or reject the design decision.
Practice exercise
Create a fresh example for Single Task using a different product, screen, component, or content set. Explain what changed and why.
15.2 Happy Path
Happy Path 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
- Define the user problem connected to Happy Path.
- Collect evidence before jumping to a polished solution.
- Create the smallest flow, sketch, wireframe, prototype, or test needed to answer the question.
- Test the design with realistic content, states, and device constraints.
- Record what you learned and change the design based on evidence rather than preference.
10 practical examples
- Apply Happy Path to a course website and explain the decision you made.
- Apply Happy Path to a online store and explain the decision you made.
- Apply Happy Path to a banking app and explain the decision you made.
- Apply Happy Path to a school portal and explain the decision you made.
- Apply Happy Path to a clinic booking system and explain the decision you made.
- Apply Happy Path to a dashboard and explain the decision you made.
- Apply Happy Path to a restaurant site and explain the decision you made.
- Apply Happy Path to a mobile app and explain the decision you made.
- Apply Happy Path to a creator site and explain the decision you made.
- Apply Happy Path to a business landing page and explain the decision you made.
Hands-on example
UI/UX PRACTICE
Problem: A user struggles with Happy Path.
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 Happy Path plus a clear statement of what evidence would confirm or reject the design decision.
Practice exercise
Create a fresh example for Happy Path using a different product, screen, component, or content set. Explain what changed and why.
15.3 Alternative Path
Alternative Path 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
- Define the user problem connected to Alternative Path.
- Collect evidence before jumping to a polished solution.
- Create the smallest flow, sketch, wireframe, prototype, or test needed to answer the question.
- Test the design with realistic content, states, and device constraints.
- Record what you learned and change the design based on evidence rather than preference.
10 practical examples
- Apply Alternative Path to a course website and explain the decision you made.
- Apply Alternative Path to a online store and explain the decision you made.
- Apply Alternative Path to a banking app and explain the decision you made.
- Apply Alternative Path to a school portal and explain the decision you made.
- Apply Alternative Path to a clinic booking system and explain the decision you made.
- Apply Alternative Path to a dashboard and explain the decision you made.
- Apply Alternative Path to a restaurant site and explain the decision you made.
- Apply Alternative Path to a mobile app and explain the decision you made.
- Apply Alternative Path to a creator site and explain the decision you made.
- Apply Alternative Path to a business landing page and explain the decision you made.
Hands-on example
UI/UX PRACTICE
Problem: A user struggles with Alternative Path.
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 Alternative Path plus a clear statement of what evidence would confirm or reject the design decision.
Practice exercise
Create a fresh example for Alternative Path using a different product, screen, component, or content set. Explain what changed and why.
15.4 Failure Path
Failure Path 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
- Define the user problem connected to Failure Path.
- Collect evidence before jumping to a polished solution.
- Create the smallest flow, sketch, wireframe, prototype, or test needed to answer the question.
- Test the design with realistic content, states, and device constraints.
- Record what you learned and change the design based on evidence rather than preference.
10 practical examples
- Apply Failure Path to a course website and explain the decision you made.
- Apply Failure Path to a online store and explain the decision you made.
- Apply Failure Path to a banking app and explain the decision you made.
- Apply Failure Path to a school portal and explain the decision you made.
- Apply Failure Path to a clinic booking system and explain the decision you made.
- Apply Failure Path to a dashboard and explain the decision you made.
- Apply Failure Path to a restaurant site and explain the decision you made.
- Apply Failure Path to a mobile app and explain the decision you made.
- Apply Failure Path to a creator site and explain the decision you made.
- Apply Failure Path to a business landing page and explain the decision you made.
Hands-on example
UI/UX PRACTICE
Problem: A user struggles with Failure Path.
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 Failure Path plus a clear statement of what evidence would confirm or reject the design decision.
Practice exercise
Create a fresh example for Failure Path using a different product, screen, component, or content set. Explain what changed and why.
15.5 Completion
Completion 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
- Define the user problem connected to Completion.
- Collect evidence before jumping to a polished solution.
- Create the smallest flow, sketch, wireframe, prototype, or test needed to answer the question.
- Test the design with realistic content, states, and device constraints.
- Record what you learned and change the design based on evidence rather than preference.
10 practical examples
- Apply Completion to a course website and explain the decision you made.
- Apply Completion to a online store and explain the decision you made.
- Apply Completion to a banking app and explain the decision you made.
- Apply Completion to a school portal and explain the decision you made.
- Apply Completion to a clinic booking system and explain the decision you made.
- Apply Completion to a dashboard and explain the decision you made.
- Apply Completion to a restaurant site and explain the decision you made.
- Apply Completion to a mobile app and explain the decision you made.
- Apply Completion to a creator site and explain the decision you made.
- Apply Completion to a business landing page and explain the decision you made.
Hands-on example
UI/UX PRACTICE
Problem: A user struggles with Completion.
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 Completion plus a clear statement of what evidence would confirm or reject the design decision.
Practice exercise
Create a fresh example for Completion using a different product, screen, component, or content set. Explain what changed and why.
Chapter 15 review — 10 questions and answers
1. What is the main purpose of Single Task?
Answer: Single Task 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 Single Task?
Answer: Treating Single Task as a visual preference instead of connecting it to a user need, constraint, or testable outcome.
3. What is the main purpose of Happy Path?
Answer: Happy Path 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 Happy Path?
Answer: Treating Happy Path as a visual preference instead of connecting it to a user need, constraint, or testable outcome.
5. What is the main purpose of Alternative Path?
Answer: Alternative Path 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 Alternative Path?
Answer: Treating Alternative Path as a visual preference instead of connecting it to a user need, constraint, or testable outcome.
7. What is the main purpose of Failure Path?
Answer: Failure Path 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 Failure Path?
Answer: Treating Failure Path as a visual preference instead of connecting it to a user need, constraint, or testable outcome.
9. What is the main purpose of Completion?
Answer: Completion 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 Completion?
Answer: Treating Completion as a visual preference instead of connecting it to a user need, constraint, or testable outcome.