[cm2187]

My point is that it's not even an assembly which is part of the installed .net framework. It's an assembly that needs to be downloaded from the internet. That's not exactly the syntax of the language nor a model of simplicity... Again compare it to python.

[recursive]

I pretty much agree with the essence of what you're saying. However, it could still be syntax. For instance linq query expressions are a defined to translate into various .Select(), .Where(), .SelectMany(), and other method calls. However, those methods aren't necessarily defined in the standard library. I mean, they usually are, but they could be just as easily defined for a given type in a 3rd party library. So this isn't an entirely new concept in .net.