Introduction

“Measure twice, cut once”
	“Look before you leap”

What do these sayings have in common?

They're about thinking before acting.

Why? Because it saves time, money, effort and embarrassment.

It's plain common sense, yet, when it comes to software development, this common sense seems to disappear.

All too often, projects start before thought has been put into the project's purpose, its desired results, and how its success will ultimately be measured.