I agree. It seems like if someone were to learn C# 3.0 and wanted to learn how to use LINQ with lambda, for example, they probably could figure out how to use

I agree. It seems like if someone were to learn C# 3.0 and wanted to learn how to use LINQ with lambda, for example, they probably could figure out how to use it as far as syntax, but they wouldn't really know how it works (as far as .NET implementation) or why it was implemented, without having to back to knowing how things were done in C# 2.0.