A Strange Coincidence?

I just noticed a very funny/odd line in episode 636...Jeff Clark calls the good Professor's house while Adam is hiding there, and Adam picks up the phone without saying anything.  Later, when Jeff reports this to the Professor, the Professor says it might have been a ghost.  However, he then remarks to Jeff Clark that he never heard of a ghost that uses the telephone.  Hmm, well, we all know that will all change within three episodes--a certain late Victorian spectre will soon haunt Collinwood via a telephone.  I hadn't noticed this little line before, but it suddenly seemed very funny to me; I wonder whether it's mere coincidence or, possibly, foreshadowing.

Maybe the writers were "planting a seed..."

They must've been thinking at least three episodes ahead. Very interesting.

Thanks for the heads-up on that bit of dialogue!