Google video about consepts

[Georg Wrede]

Reiner Pope wrote:
> I've thought about some kind of syntax to say, "Don't use this template 
> -- choose a different overload;" or "prefer this template to that" but 
> it seems a bit tricky for user code. It seems that if we really wanted 
> it, and expected it to be used, there would have to be *some* 
> substantial change to the language to introduce it; either make it 
> native to the language, or allow library code to explicitly assist with 
> overloading.

I think we should have both.

It's not hard to imagine that the language can assist up to a certain 
point, but often the more delicate stuff simply has to be left to the 
template author.