And he feels that change requires "rigorous performance measurement", the establishment of "concrete targets".
That change included all kinds of content: from Pages as well as other posts.
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And that change had to be pervasive enough to create a new culture at the company.
But he argues that change is coming whether or not we're ready for it.
So today I'm pleased to say that we have proved that change is possible.
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Greenstein says that change alone could extend Medicare's solvency by an additional two years.
We believe that change is needed in the way we consume and produce food.
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He was sounding sceptical over that change last week, but most other parties want it.
That change is going through Parliament and is due to become law next April.
That change goes beyond the public ownership in what has been a remarkably insular operation.
We have been talking about history, the future, great events that change the world.
From the day we began this campaign, I always said that change takes time.
Growing research from the neurosciences and cognitive sciences reveal that change really is difficult for humans.
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People do change, obviously, but, the question is what role they play in that change.
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Our role was to ignite energy and ideas to equip leaders to enable that change.
But leaders have also got to convince people within the organization that change is possible.
Health care will soon be brimming with similarly exciting start-ups producing apps that change everything.
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It's becoming clear that change will take longer than Ford executives anticipated a few months ago.
You can argue there is not enough change, and that change is not fast enough.
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Things that change our perception of our life on earth and our place in the universe.
These companies rely on microscopic beads that change color when voltage is applied to them.
What exactly will be enhanced about multi-player and how will that change the core gameplay?
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If you want just a snapshot of that change - look at Boston in Lincolnshire.
That change is estimated to bring down annual increases by three-tenths of one percent.
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Technology doesn't drive change, economics drives change and that change in turn drives technology.
We know from our history that change is hard, just like that 101-year-old supporter knew.
Digging in their heels, worried about themselves, getting extremely territorial, versus them embracing that change.
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Our special report this week argues that change may finally be under way.
Making that change is far too intimidating, complicated and time consuming for the average person.
Doubts over Fidel's role have meant that change has so far proceeded at a glacial pace.
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