Ozone is one example where the "simple" models just do not work very well.

For now, many educators say that not enough research has been done to know if one model works better than the other.

If a model works, the plan is to copy it across the state.

This model will never work except perhaps for a few books - look at music.

In an information society, this model of education works far less well than it once did.

"The current model of Russian capitalism is just not working."

And in many cases, the officials argue, the models have not worked.

And I don't think in the future that's going to be the way the model works.

And now anyone can go see if this model works well.

"In the long run this model will simply not work," he said.