These people are not part of some theoretical economic model.

However, a new theoretical model was presented at the annual meeting.

A number of theoretical models have been developed to explain how certain groups change over time.

We may as well throw out our theoretical models, I guess.

Some research has been conducted into a theoretical model of the system, but it is quite complicated.

At the other end there may be a "theoretical" model for the experimental results.

A theoretical model is normally used as a first order estimate.

Various theoretical models have been proposed and are being studied.

Ways that are not predictable from a theoretical model, or concept.

They based their theoretical models on computer simulations of the thought process.