If you take the entire corpus of knowledge required to use a language, I'd argue that F# is less complex than C#. It may seem like it's more complex if the use

If you take the entire corpus of knowledge required to use a language, I'd argue that F# is less complex than C#. It may seem like it's more complex if the user doesn't have a functional background; but if the user is equally comfortable with both OOP and Functional paradigms F# is the simpler, smaller, more regular language of the two.