Re: nonsensical rule about pivot and in and out of bounds (warning: math geek post)

Bob Koca wrote:
> Rule IX A  The entire playing field is in-bounds. The perimeter lines
> are not part of the playing field and are out-of-bounds.
>
> Rule Viii 8  If the pull is caught, the disc is put into play at the
> spot on the playing field closest to where the disc is caught.
>
>
>   The problem is that there is no spot on the playing field closest to
> where
> the disc was caught. Since the lines are not part of the playing field
> the playing field itself is an open set (in the topological sense).
> It would be like trying to find the closest real number to 2 that is
> less than 2. Any proposed answer could be improved.

How do you know it's not the line that's the open set, leaving the 
playing field as a closed set?

jason