Efficiency is not an arithmetical or managerial concept it is a function of optimal and just decisions.

Estimating the fair price for financial instruments using the Black Scholes model is a complex algorithmic calculation.

It was also said that there should be effectiveness, but, again, as I have argued earlier, effectiveness is not an arithmetical constant.

The World Bank, with its typical mathematical precision, has estimated that for every four years of education, fertility is reduced by about one birth per mother.

DNA computing does not provide any new capabilities from the standpoint of computability theory, the study of which problems are computationally solvable using different models of computation.

That's hard to say.

Worse, a mathematical error was made in the original application of these methods to field emission, and even the corrected theory that was put in place in the 1950s has been formally incomplete until very recently.

It is difficult to translate a poem into another language.

It's hard to persuade Jonathan.

It is difficult to generalize.

There are two ways to address this problem one is to make the server computationally bounded and the other is to assume that there are multiple non cooperating servers, each having a copy of the database.

This problem is too difficult for me to solve.

We hardly ever see you around here.

It's hard being a parent.

Hard to believe, right?..

Yesterday was an indescribable day.

It was difficult to remove the coffee stain.

It's going to be difficult for us to do that.

It is difficult to disagree with the protesters.

Hard to be Easing

But it s hard to break our habits, our adult habits.

It's difficult for them to understand that they're going to die.

One can hardly change one's point of view.

There are some things that are difficult to translate.

Now we get to the hard part.

The answer is not hard to find.

This is hard for Islamist parties to accept.

And seeing them makes it harder to deny their humanity.

It is difficult to make a credible forecast.

Now, it's hard to do. It's hard to translate a fish form, because they're so beautiful perfect into a building or object like this.

Turkey s Balancing Act

What do we learn from this example? It s hard to say.

From this perspective, adjustment is hard to beat.

It is hard to believe it is almost Christmas.

It is difficult to translate a poem into another language.

That claim was even more far fetched.

The reason is not hard to fathom.

Is it difficult to rebuild an identity via external context?

It was difficult for observers to judge its actual membership.

In practice, it has been usually difficult to locate them.

This makes it difficult to link the obligation with a strict liability.

And, of course, it is as difficult to be against cohesion as it is to be against friendship.

The hard work begins now.

It is difficult to prove a negative.

But it is hard to be confident.