Thanks for the Phillips Curve - I never knew its name. The only
   issue with it, is it depends on a source of information that's
   becoming increasingly unreliable; that of employment.

   For example, I run a small business. Now, thankfully, I do
   things legit. All paperwork filed and stuff. So, I can be
   counted properly.

   yet, consider - the hierarchy of big-->small is built into the
   formula.

   Businesses create money through borrowing/lending for
   goods/services and effectively create money ex nihlo. They also
   make jobs. Jobs are employment. Taxes are collected by those
   businesses who create the money and the employment and I'm not
   going to go into bonds here.

   Yet, not all people make money through this model. In fact a
   growing number of people are very small businesses, or
   individuals working under the table, or utilizing 1099s which
   they may or may not file.

   More and more untrackables.

   Not everybody gets a job that creates a W2.

   I'm sure they compensate for it, and perhaps on a GRAND
   overview, formulas like this are helpful.

   But I believe they will be less and less effective because the
   data is less and less comprehensive..

   Have you noticed since 2008 I think that wherever you go,
   companies are asking for your annual income?

   Missing data.

   There's a LOT of missing data.