Over several decades,

Fast forward more than two decades

When I began recording over four decades ago,

They've been swept away over the last two decades by these types of world flattening digitization technologies, right?

Look a decade ago, look two decades ago markedly different.

Over two decades ago, the world insisted to Africa that markets must be liberalized, that economies must be structurally adjusted.

I've been doing, I've been doing working memory studies for two decades.

They have also given funding for two decades to this whole program.

The last two decades have been the champagne era for dirty lucre.

Over the past few decades, amphibian populations have been rapidly disappearing worldwide.

And so the next over the next six decades, believe it or not,

China is the world's greatest anti poverty program over the last three decades.

But it got violent in the last two decades and includes decapitation and the death of two mayors.

Over the past two decades, since the end of the Cold War, there has been an overall decline in the number of civil wars.

Now, there's a reason why this test hasn't been updated in over six decades.

There's been this huge decline in crime in America over the last three decades.

That's been very popular for a very long time as had Michael been in decades and decades and decades.

So for three decades,

Well another way of writing one is one half times two over two. two over two is the same thing as one, and that equals two over four.

Over 10,000 physicists and engineers from 85 countries around the world have come together over several decades to build this machine.

For nearly two decades now, the news has been bad and the images have been haunting.

Three over six plus two over six equals five over six.

They're usable over two years.

But over the course of the last several decades, we were just borrowing other people's output.

We've spent decades professionalizing implementation.

It's been done for decades.

Ok, you two, look over here! one...two...three!

And to stop it crashing over the last two to three decades, we've expanded the money supply, expanded credit and debt, so that people can keep buying stuff.

And I've been doing this for two decades and I've seen over and over and over again that scores on our tasks that we design to measure working memory capacity they're strongly correlated with scores on standardized tests like the SAT.

So one, two. Right over there.

Over two million people became refugees.

So decades ago, not years ago,

And it went on for decades.

What we see for more than two decades is that open source has consistently out innovated proprietary software.

(Applause.) For the first time in two decades, Osama bin Laden is not a threat to this country.

Over the last decades, neuroscience has really understood the synapse in ways that were just not possible before.

This becomes one over two to the third power times 1 over 5 squared times two squared.

It was over two years before Jane got over the shock.

The United States is the only superpower, and it's likely to remain that way for two or three decades.

Orange juice, and two eggs over easy.

I stayed in Chicago over two months.

So this is period two over here.

But over two million people cut trees.

All of that over x plus two.

The first two times I rolled over.