Usefulness of the "not in" operator

[Westley Martínez]

On Sat, Oct 08, 2011 at 12:34:42PM -0400, Roy Smith wrote:
> In article <4e906108$0$27980$426a34cc at news.free.fr>,
>  candide <candide at free.invalid> wrote:
> 
> > After browsing source code, I realize that parenthesis are not necessary 
> > ("not" has higher precedence than "in").
> 
> Here's my take on parenthesis:  If you need to look up whether they're 
> necessary or not, they are :-)

So we don't need precedence charts in the bathroom?