Manu's `shared` vs the @trusted promise

[Dukc]

On Tuesday, 23 October 2018 at 11:24:27 UTC, ag0aep6g wrote:
> Instead, maybe we could let @system apply to variables. It 
> would forbid accesses from @safe code. Then (strongly) @trusted 
> code can rely on them.
>
> Without a language change, an idiom like this might do the 
> trick:
>
> [snip]

Sounds good.