simulating behavior without actually affecting database

Hey all,

A lot of people use factory girl to simulate behavior without affecting database, particularly for testing. I have a situation where this is not for testing but rather someone clicks on button to simulate behavior but we create a User object in order to run the simulation but while I want the results of simulation to be stored in a simulation table I dont want the user to be actually created in user table. Of course the simulation command uses save! on a user (but it only saves the user in real live app but not during the simulation). So do I use factory girl for this inside my models (this is not testing) or is there another way?

thanks for response