Something you see a lot of is the word "change". We need to change the world. We are the change. President Obama even used the word as part of his presidential campaign. Change.
I don't think change is enough. Cars have changed from 1970 - 2010, but they aren't better. It seems that a lot of things are changed just for change's sake. What we need to focus on is improvement. We shouldn't really change anything unless we can improve it.
Like I mentioned, it's semantics, but I think it's an important point.