Vision for the D language - stabilizing complexity?

[Walter Bright via Digitalmars-d]

On 7/12/2016 2:40 AM, John Colvin wrote:
> For the previous statement to be false, you must define cases where
> casting away immutability *is* defined.

@system programming is, by definition, operating outside of the language 
guarantees of what happens. It's up to you, the systems programmer, to 
know what you're doing there.