Chapter 1. Introduction

What is System-Level Specification?

What is a system-level specification? In actuality, it is not a specification at all — no complex system will ever be defined by a single, closed-form model. It is unrealistic to believe that the designers of the Empire State Building or Saturn V had a single, closed-form solution that showed their designs would result in successful implementations. Given the relative complexity of today’s systems, it is equally improbable that we will ever have single models for our next-generation design artifacts.

The answer lies in what engineers, particularly systems engineers, actually do. Cultural folklore would have us believe that engineers write and solve mathematical equations to generate designs. ...

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