On 8 Apr., 16:27, William Hughes <wpihug...@gmail.com> wrote: > On Apr 8, 4:09 pm, WM <mueck...@rz.fh-augsburg.de> wrote: > > > On 8 Apr., 15:24, William Hughes <wpihug...@gmail.com> wrote: > > > > Let D be the collection of all finite lines. > > > > Do you agree with > > > > If you remove the collection of all finite > > > lines from D there is nothing left. > > > > Yes or No > > > Depends > > Wow! WM will not even concede > that if you have A and take away > A then you have nothing left.
When talking to a sober scientist, there is no problem to admit that. But when talking to someone who insists (or is in doubt to insist because he is not clear in his expression), that there could be a difference between an infinite sequence of finite unions of elements and an infinite union of the same elements, then I would .