"In theory, there is no difference between theory and practice. But, in practice, there is."
— Theory

January 1, 1970

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Added on April 10, 2026
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Original Language: English

Sources

Attributed to Jan L. A. van de Snepscheut in: Doug Rosenberg and Matt Stephens (2007) Use Case Driven Object Modeling with UMLTheory and Practice p. xxvii; Quote is also cited without attribution in Doug Rosenberg and Kendall Scott (2001) Applying Use Case Driven Object Modeling With UML, p. 1