ETC Principle

Easy to Change (ETC) principle
Good Design Is Easier to Change Than Bad Design

Much of the SOLID Design Principles could be thought of as a special case of ETC.

• Why is decoupling good?
  Because by isolating concerns, we make each concern easier to change.

• Why is the Single Responsibility Principle useful?
  Because a change in requirements is mirrored by a change in just one module.

• Why is naming important?
  Because good names make code easier to read, and you have to read it to change it.

(David Thomas, Andrew Hunt)

See Also:

• Big Ball of Mud

• Coupling

• DRY-Principle

• Motivation for Good Design

• Naming Examples

• Single Responsibility Principle (SRP)

• SOLID Design Principles