# It is hard to change interfaces This is why there are different plug standards around the world: whatever was installed first stuck, regardless of subtle benefits of one over the other. Interfaces usually change when the benefit is overwhelmingly large [[List of things that affect dispersion]] - needs to ask “does this require changing an interface?” ### Related * [[Modularization allows different groups to work on different pieces]] * [[Modularization enables pieces to be used in many different technologies]] * [[Modularization enables the higher level technology to improve continuously even if pieces improve discretely]] * [[Modularizing ideas and specialization are the same thing]]