For what it's worth, I've been writing code with OverloadedStrings for several years now and in my experience it rarely causes a problem, even for beginners. The context almost always provides enough information to resolve the ambiguity. (admittedly I'm slightly surprised by this too, but experience has convinced me)

I don't have much experience with OverloadedLists, but I'd be prepared to believe that it's a similar story there too.

OverloadedLabels is really a new syntactic form and doesn't fall into the same category as the other two here.

 

Cheers

Simon