From: Daniel Berger [mailto:djberg96 / gmail.com] 
>    def national_holiday?
>       new_years? && memorial_day? && independence_day? && 
> thanksgiving?
> &&
>       christmas?
>    end

You stingy bastard! I only get a holiday when it happens that New
Year's, Memorial Day, Thanksgiving, AND Christmas all somehow fall on
the same day? ;)

I think you mean ||