2008-08-27: Fan in vs. Fan out

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GEOSS Mantra: Many datasets are used for one societal benefit area (fan in) and one dataset is used for many societal benefit areas (fan out).

The user controls the datasets used and workflows developed to enhance sba's (fan in). Fan in is deliberate. User pulls data.

The data provider can only push the data so far:

• close to the user
• create market for data
• increase surface area

The data provider cannot anticipate how/when/if the data will fan out.

Fan in does not occur at clearinghouse level - distributed datasets are still distributed the access is organized.