Why UTF-8/16 character encodings?

[Jakob Ovrum]

On Thursday, 30 May 2013 at 15:48:12 UTC, Entry wrote:
> I'm glad you agree, though I believe that I never said anything 
> about D 'choosing' which human languages are compatible with 
> it. I just expressed my belief that should people choose to 
> construct something, be it a ship or a computer program, the 
> usage of a single language will greatly enhance their progress 
> (ever heard the story of the Tower of Babel? wink wink). Sorry 
> if my previous comment seemed hostile, that was not my 
> intention.

If the programmers who are going to be working on that code don't 
understand the "Single Language", then what use is it?