However, the theory works well in situations meeting these assumptions.

Then I had to see if the theory actually worked in the real world.

And the theory worked - up to a point.

She was about to see if her theory would work.

It shows their theory doesn't work, at least in Europe.

Thatcher also found out that the theories did not work well in practice.

So if the theories don't work in practice how does the pragmatic approach differ.

It's been proved that the theory can work in practice.

From 1967 to 1997, the theory worked 87.5 percent of the time.

The latest numbers suggest, however, that this theory isn't working much better on the economic front than it is in Baghdad.