He put his hand on the throttle.

What paper went into that flap?

How would you make a single flap?

We're going to learn how to make one flap.

Well, there are other ways of making a flap.

I didn't have to try to flap my wings.

It's that little bar there. He put his hand on the throttle.

So that's the flap, and all the rest of the paper's left over.

It's very complicated, but it turns out they flap their wings very quickly.

And on Sunday morning the neighbors leaf blower comes out, and I want to throttle them.

And if I make the flap from the middle, it uses a full circle.

If I put the flap on the edge, it uses a half circle of paper.

And you can see there, it needs a quarter circle of paper to make a flap.

So, no matter how I make a flap, it needs some part of a circular region of paper.

If I make the flap as skinny as possible, I get to the limit of the minimum amount of paper needed.

The U.N. you know, they took 20 years just to add a flap to a tent, but I think we have some more exciting things.

And from that stick figure, I somehow have to get to a folded shape that has a part for every bit of the subject, a flap for every leg.

And we tackle this problem by building giant, dynamically scaled model robot insects that would flap in giant pools of mineral oil where we could study the aerodynamic forces.

Well, if I unfold it and go back to the crease pattern, you can see that the upper left corner of that shape is the paper that went into the flap.

Take a square. Fold it in half, fold it in half, fold it again, until it gets long and narrow, and then we'll say at the end of that, that's a flap.

And some of the most heartrending emails that I get on my website are actually from adolescents hovering on the edge of burnout, pleading with me to write to their parents, to help them slow down, to help them get off this full throttle treadmill.

A stronger trade balance in the late 1990s would not have added to output growth or job creation, which were running at full throttle. Further increases in net export demand would have been met only by attracting workers away from the production of something else.

But the first fell prey to a long US occupation, and the second currently faces a US led oil export embargo designed to throttle it financially. As a result, America s efforts to give international effect to its new Iran Sanctions Act constitute a double whammy for India.

These types of spectacles used to be reserved for the nomination of Supreme Court justices a lifetime appointment to a nine member body that can overturn laws passed by Congress and signed by the president. But those full throttle battles have now spilled over to other nominations.

Yes, the chances of an immediate repeat of the acute financial meltdown of 2008 are much reduced by the fact that most investors, regulators, consumers, and even politicians will remember their financial near death experience for quite some time. As a result, it could take a while for recklessness to hit full throttle again.

International finance economists see a far bleaker future. They see the end of large scale dollar purchase programs by central banks leading not only to a decline in the dollar, but also to a spike in US long term interest rates, which will curb consumption spending immediately and throttle investment spending after only a short lag.

New York Even before the Supreme Leader, Ayatollah Ali Khamenei, decided to throttle what little legitimacy was left of Iran s managed democracy, it was a peculiar system, indeed. Although Iranian citizens had the right to elect their president, the candidates had to be vetted by the Council of Guardians, half of whom were picked by the unelected Supreme Leader.

ISPs would throttle traffic from ISPs that did not join the security collective, and pretty soon their customers would complain, forcing them either to join or find themselves relegated to the underworld, from which it would be hard to launch attacks because no one would accept their traffic. And, because ISPs answer to other ISPs, not governments, dissidents and whistleblowers could maintain their anonymity.

And it turns out that the insects flap their wings in a very clever way, at a very high angle of attack that creates a structure at the leading edge of the wing, a little tornado like structure called a leading edge vortex, and it's that vortex that actually enables the wings to make enough force for the animal to stay in the air.

PRINCETON Forty years ago, I stood with a few other students in a busy Oxford street handing out leaflets protesting the use of battery cages to hold hens. Most of those who took the leaflets did not know that their eggs came from hens kept in cages so small that even one bird the cages normally housed four would be unable to fully stretch and flap her wings.