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Product facts & stats

7 fact-checked facts about product design and development, each with the reason behind it. 5 more are in today's round and join this page after it closes.

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The basics

In product development, what is a prototype?

AnswerAn early model built to test an idea

Prototypes let teams test ideas cheaply before building the real thing.

What is beta testing?

AnswerTesting a nearly finished product with real users

Beta testers use a near-final version and report problems before full release.

Going deeper

In retail, what does SKU stand for?

AnswerStock keeping unit

A SKU is a store's own code for tracking each distinct item it stocks.

What are the four stages of the classic product life cycle?

AnswerIntroduction, growth, maturity, decline

Sales typically rise after introduction, level off at maturity and fall in decline.

A 'user story' in agile product teams usually follows which template?

AnswerAs a [user], I want [goal], so that [reason]

User stories describe a feature from the point of view of the person who needs it.

Expert level

How many digits are in an ISBN issued for books since 2007?

Answer13

ISBNs moved from 10 to 13 digits in 2007 to match the wider EAN barcode system.

In design, what does 'affordance' describe?

AnswerProperties of an object that suggest how it can be used

A door handle affords pulling and a flat plate affords pushing; good design makes use obvious.

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