How would you define "improvement" if not rendering something more effective by changing it or making it different? In this particular case, search on Android i

How would you define "improvement" if not rendering something more effective by changing it or making it different? In this particular case, search on Android is being made more effective by searching contacts and apps. As Steve Jobs said, "We have always been shameless about stealing great ideas." They just want to stop everyone else from doing it too.