"The old structure worked pretty well through the cold war," one senior government official said.

For them, the old structure does not work well.

The existing structure of responsibility and authority in the city school system does not work.

We should ask how such a structure would work.

Why should we expect that a new structure would work differently?

"We are going to look at what structures will work," she said.

"They see the old structures are not working very well, so they're willing to try anything."

It remains to be seen how such a structure would work.

The political structure that existed was not working for them, he said.

But changing social dynamics and structure has worked in the past.