Unit 3 · Lesson 10 of 20
Compare plausible approaches
Use patterns as candidates and choose by task fit, risk, and context.
01 / Learn
The idea
Patterns are reusable approaches, not prescriptions. A date picker, calendar view, and list of available slots may all seem relevant, but they help with different decisions. Start with the user's task: are they choosing any acceptable opening, comparing dates, or coordinating with another schedule? Consider data freshness, screen size, accessibility, and what happens when a slot disappears.
Generate at least two credible alternatives before polishing one. Write the advantage, cost, and failure mode of each. Then choose a provisional direction and state what evidence would make you switch. Reference examples can suggest possibilities, but copying a familiar company's interface does not prove fit for your users.
Selecting a named component ends the design decision. The component only helps if its behavior and information match the task.
02 / See the reasoning
Worked example
Fictional scenario
A team needs people to choose a delivery time from many changing slots on a phone.
An expert learns that most customers want the earliest slot after work, not a specific date. They compare a dense monthly calendar with a short list grouped by evening availability. The list may surface a viable option faster, while a calendar may help people coordinating around a fixed date. They prototype both and test with real scheduling tasks.
Try a decision →03 / Decide
Guided decision
Most users seek the earliest evening opening, but some must choose a specific date. What should you test first?
Feedback on your choice
What could change the answer: If research shows date-specific planning is the dominant task, a calendar-first approach may be stronger; if availability is sparse, a simple list may be enough.
This feedback helps you examine the decision; it does not grade your written reasoning.
Apply it somewhere new →04 / Apply elsewhere
Independent application
Fictional scenario
A factory operator selects one machine from a large equipment list on a shared tablet, sometimes with gloves on.
Compare two selection approaches, including discoverability, error prevention, physical operation, and recovery from a wrong selection. Recommend one conditionally.
Make: A two-option decision table and annotated interaction sketch.
Alternatives are both plausible, the chosen approach serves the actual task and environment, and the learner states evidence that could reverse the choice.
Lesson complete
You applied the method in a new context.
You studied the idea, tested a decision, and made an artifact for a new context. Keep the reasoning for your next UX question.
05 / Keep working