be more/bigger/greater than the sum of its parts
To be something made up of a large collection of things or people in which the total unit is more important, impressive, successful, etc., than its components are individually. America is certainly greater than the sum of its parts. The global social networking site, so intrinsically connected to and supported by users, is certainly more than just the sum of its parts. Even though everyone in this department is vitally important, the work we are able to do together is more than the sum of its parts.
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