On Friday, 21 August 2015 at 22:03:51 UTC, Walter Bright wrote:
> "Renamed class from logical_const to propagate_const as the former is used with different meaning in the D community."

I think, it was a concern raised by a reviewer for N3973 that the term has prior usage.

On Thursday, 20 August 2015 at 22:07:10 UTC, John Carter wrote:
> https://twitter.com/yukihiro_matz/status/634386185507311616
>
> Yet another choice D got right "out of the box" :-)
>
> Even Bjarne is coming around to the "Generic all the time" view...
>
>    https://www.youtube.com/watch?v=xcpSLRpOMJM
>
> Pity that concepts looks to be a very painful syntax for expressing what D does so clearly.
>
> Hurry up Walter, the rest of the world is catching up to you! :-D
>
> (Just joking... things like this clearly show you're leading, and leading in the right direction!)

Imitation is the sincerest form of flattery - as they say.