Blog

Archive for the ‘Ask the Experts’ Category


Leveling Requirements

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

I was recently asked the question. “Suboptimal leveling of requirements seems to be a recurring issue for the projects in my business group (we’ve even seen low-level mechanical dimensions specified in the system requirements). We’ve been reading through the INCOSE … Read More

When a system is modified, does its TRL change?

Posted on: August 30th, 2017 by Lou Wheatcraft No Comments

I was recently asked the question. “When a project begins with a existing device that has a TRL of 9, with the goal to develop a miniaturized version of the device, is the TRL of miniaturized version of the device … Read More

Implementation in Requirements – Internal Directive (i.e., Constraint) to use a Legacy Component.

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

We were recently asked the following question from one of our clients: “Our company is updating/replacing a legacy system.  The current system includes an embedded processor that was already built long ago and was developed without any requirements (at least … Read More

Levels of abstraction when writing requirements

Posted on: May 1st, 2017 by Lou Wheatcraft No Comments

Requirements Experts recently received an email from one of our clients seeking advice on levels of abstraction when stating requirements.  The email read as follows: “What are your thoughts on the use of “shall prevent” in a requirement. I believe … Read More

Use of active voice in requirements

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

Requirements Experts recently received an email from one of our clients seeking advice on the use of active voice when writing requirements.  The email read as follows: “In an academic paper I often use as reference, there are a number … Read More