I love F# (I'm currently a contractor with the F# team in Microsoft Research), and I'm delighted to see people advocating its use. I prefer F# to C# by a wide

I love F# (I'm currently a contractor with the F# team in Microsoft Research), and I'm delighted to see people advocating its use. I prefer F# to C# by a wide margin. But C# is still a really well designed language, which makes it much harder for F# to gain wider traction than if it were competing primarily against a weaker language like Java.