How does D improve design practices over C++?

[Walter Bright]

BCS wrote:
> I can believe going for months without compiling if you are not actually 
> writing code (I have done this my self) but if you are actually writing 
> actual code for months without compiling than you are extraordinarily 
> good (99.99+ percentile) or rather foolish. (Any system that takes more 
> than a few hours to build is to complex for most people to completely 
> understand with any degree of reliability without actually seeing it 
> operate)

Even at Boeing they build a mockup before going into production.