Can you spot the deliberate mistake in this excerpt from a developer's CV?

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I.T. Skills/Competencies

* Expert - C#.Net 2.0 2.5 years
* Expert - VB.Net 1.0 1 year
* Expert - VB 6 4 years
* Expert - S.Q.L. 8 years
* Competent - Test Driven Development 4 years
* Competent - O.O. Analysis and Design 2 years
* Competent - Agile Development 1 year
* Competent - Java 1.3 2 years
* Competent - Web Services 2 years
* Competent - U.M.L. 5 years

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