Onur Cobanli explains:
There is always a threshold of good design, when something just works, it is an average design, but good design has more intelligence and diligence embedded into it; it not only works but it works great, it solves your problem now as well as it solves your future problems by not creating a problem itself, it is safer, it is more durable, it is more reliable. Average design is not your friend, it is your enemy.