ROOTED IN SAHARANPUR. IMAGINING A BRIGHTER INDIA. 2026 • A journey of discovery
Ideas & inventions Classes 912

What happens at the edges?

A design that works once still needs wider testing.

About 20 minutes Read · try · explain
Take your time. Speak, draw or write your answers.
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01 / UNDERSTAND

Here is what is happening.

An edge case is a situation near a limit or outside the usual pattern. A library booking form should handle no available seats, duplicate requests and an interrupted connection. Define expected behaviour before testing. Use fictional data and check that failures leave users with a clear next step.

Pause. Make the idea your own.

Explain one idea to a partner, draw it or write it in your own words. Which part is an observation, an example or a question?

You can use a home language. No need to share personal experiences or finish everything in one sitting.
02 / MAKE IT YOUR OWN

Your little investigation

What you need

Paper and a pencil, or a partner to talk with. Drawing and speaking are welcome.

  1. Write a simple booking rule for ten imaginary seats.

  2. Describe expected behaviour for the eleventh request and a repeated request.

  3. Design a message that explains the result without exposing another user’s details.

03 / CHECK YOUR UNDERSTANDING

What should happen before testing an edge case?

Choose one answer
KEEP ASKING

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