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Posts Tagged ‘requirements’


Why Do We Need Text-based Requirements?

Posted on: March 15th, 2017 by Lou Wheatcraft No Comments

With increasing frequency, people are coming to us with a common refrain: “Why do we need text-based requirements?  We all know that, more times than not, the stakeholders don’t know what they want, and this lack of clarity leads to … Read More

Requirements – What’s the Big Deal????

Posted on: February 28th, 2017 by Lou Wheatcraft No Comments

Note: this is an update to this blog originally published in 2012. Preparing for the future A constant throughout the evolution of systems engineering is an ever-increasing complexity of systems which can be observed in terms of the number of … Read More

What is the difference between verification and validation? Part 1

Posted on: December 31st, 2015 by Lou Wheatcraft 3 Comments

A question we are often asked is “What is difference between verification and validation?” This two-part blog answers that question.  In part 1 we discuss the basic concepts of verification and validation in terms of the context in which they … Read More

How Do I Know When My Requirements Are Sufficient?

Posted on: February 28th, 2015 by Lou Wheatcraft 1 Comment

This question was asked recently on a popular discussion group. Maybe a better question to ask: “How do I know when the requirement set for the system of interest is “done enough” to give to the development team?” Where “done … Read More

Agile and Requirement–Driven Product Development

Posted on: February 15th, 2015 by Lou Wheatcraft 2 Comments

My previous blog described “Requirement-Driven Product Development” (RDPD). One of my readers asked a very important and well-formed question: “Lou, nice article. Are there any specializations to the approach for software systems? Would you say that Scrum process is consistent … Read More