between and among: worth Phobosization?

[Andrej Mitrovic]

On 12/16/13, Andrei Alexandrescu <SeeWebsiteForEmail at erdani.org> wrote:
> There's quite a bit of evidence in support of among (not as much for
> between) in the source code of Facebook's cpplint, soon to be open
> sourced. Here are some relevant quotes:

>From first glance it seems you're always using among when needing a
boolean result, so why does among have to return an index instead of a
boolean true/false?