Dear Dr. Comp:

Well, they had to go and do it again, didn't they? I mean, I just got done figuring out what "a substantial factor" is and now they changed it. Can you help me (and my rating doctors) figure out what "the prevailing factor" means before the courts do it for us?
 

Sincerely,

Running Out Of Knowledge, Information and Enlightenment

Dear R.O.O.K.I.E.:

The concept of "the prevailing factor" is not that hard to grasp. Take Larry King, for example. Why does a man who is 97 years old keep working? Well, his love of his profession, his desire to inform the public and the enjoyment he gets from rubbing elbows with celebrities may all be substantial factors in his decision to postpone retirement, but my guess is that the prevailing factor is all those alimony checks he has to write every month.

Dr. Comp

(Doctor Comp is not a medical doctor, and does not play one on TV, even in lawyers' commercials. Dr. Comp is licensed to practice massage therapy by the protectorate of Puerto Rico and the nation of Sendcashistan. All questions to Dr. Comp should be in words of three syllables or less, if possible. No Latin terms, please.)