why does --size-only not detect change only is size (but also time)?

[Wayne Davison]

On Wed, Apr 18, 2007 at 07:37:44PM -0400, CSights wrote:
> #rsync -ani --size-only Untitled.pdf Untitled-2.pdf
> .f..t...... Untitled.pdf

The file was not transferred (since there was not '<' or '>' in the
first character).  The time was changed due to the --times option being
implied by -a.

..wayne..