Richard June 3rd, 2021 The .NET or Common Language Runtime (CLR) type system is the foundation of the .NET programming model. We often talk about System.Object being the base of the type system, but it’s really the base of all (reference) types. The type system is (at least) one step lower than that. It defines that both reference and value types exist, that strings are immutable, that single-inheritence is allowed and multiple-inheritence is not, and that generics are a runtime concept. On the other h...