Problem

Design a Waitlist System

A product launch needs a waitlist where users sign up, receive a unique referral link, and move up the queue by referring others.

Submitted March 23, 2026

·@OvernightRice
Understand requirements
6/10

Iteration Score

Evaluated on stage progression, iteration quality, and depth of thinking

4/10

Goal Alignment Score

The user did not effectively clarify the requirements needed to understand the waitlist system.

·The user started with a constraints question but did not clarify the overall requirements of the system.
·There was some progression in thinking, but the user repeated ideas without breaking down the problem into distinct components.
·The prompts focused on specific features but lacked exploration of tradeoffs or reliability.

Prompt Chain · 5 prompts

1

User Prompt

Constraints

What is the expected scale of this system?

AI Response

355 in·93 out·448 total

It seems like you are jumping ahead to the constraints phase without fully clarifying the requirements of the waitlist system. Before defining the scale, it’s crucial to understand the specific needs of the system, such as the number of users expected to sign up, how the referral process works, and what user experience you envision. Clarifying these details will help you determine the scale more accurately later. Next: Clarify the requirements and functionalities of the waitlist system.

2

User Prompt

Architecture

User can generate N unique referral links. If User uses a referral link, new user joins the waitlist and original user moves up the waitlist. Waitlist is reorganised.

AI Response

492 in·118 out·610 total

You've made progress in clarifying some requirements of the waitlist system, specifically how users interact with referral links and how the waitlist is managed. However, consider elaborating on a few more aspects: 1. What happens if a user generates multiple referral links? 2. Is there a cap on how many users can join the waitlist? 3. What additional information do you need to collect from users when they sign up? Clarifying these details will give you a clearer picture of the overall system requirements. Next: Keep clarifying the requirements by exploring these questions further.

3

User Prompt

Architecture

User generates multiple unique links. each unique link can only be consumed by one other user. There should be no cap on number of users in the waitlist.

AI Response

650 in·112 out·762 total

Great, you’ve clarified that each unique referral link can be used only once and that there is no limit on the number of users in the waitlist. Now, consider other aspects of the user experience and system behavior. For instance, how do users know their position in the waitlist? What kind of notifications or updates will they receive as they move up? Additionally, think about how you will manage the process of reorganization of the waitlist when users refer others. Next: Continue clarifying the requirements by identifying user experience considerations and notification processes.

4

User Prompt

Other

how do users know their position in the waitlist?

AI Response

781 in·146 out·927 total

This is an important question to clarify as it directly impacts the user experience. Consider how you want to communicate the waitlist position to users. Here are some points to think about: 1. Will users be able to view their position in real-time, or will they receive periodic updates? 2. How will the position be displayed? For example, will it show their exact rank, or will it provide a general estimate (like "You are in the top 10%")? 3. Are there any incentives for users to check their position frequently? Clarifying these details will help you define how users interact with the waitlist information. Next: Continue clarifying the requirements by exploring the communication of waitlist positions and updates.

5

User Prompt

Other

1. Will users be able to view their position in real-time, or will they receive periodic updates? 2. How will the position be displayed? For example, will it show their exact rank, or will it provide a general estimate (like "You are in the top 10%")? 3. Are there any incentives for users to check their position frequently?

AI Response

1009 in·129 out·1138 total

You've framed some excellent questions that will help clarify the requirements for how users will interact with their waitlist positions. However, instead of posing these questions again, try to provide answers based on your vision for the system. Think about: - Whether you want to offer a real-time view of the waitlist or periodic updates. - How precise you want the information to be regarding their position. - Any potential rewards or reasons you might give users to keep checking their status. Answering these questions will help solidify your understanding of the user experience related to the waitlist. Next: Clarify the requirements by articulating your answers to these questions.

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