Why? You'd only have two models to work on, and those haven't changed in thousands of years- - - -you get paid whether you succeed or not- - - - -and you can bury your mistakes. Mechanics should charge more than doctors for their services!
Jerry

"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!