Rothschild believes he has 4, 000 models in total, but he hasn't had the time or energy to count them all.

FORBES: Magazine Article

At the same time, CMA and groups such as the American Health Care Assn. (which represents mostly for-profit nursing facilities) have asked Medicare to count all hospital days including time under observation towards the three day rule.

FORBES: What the Ongoing Battle over Medicare's Observation Stays Means for Seniors

Some countries do not even count first-time unemployed as being unemployed at all - clearly a problem when applying that idea to young people.

BBC: Global youth unemployment: Making sense of the numbers