🚀 go-pugleaf

In article <mxr.713122933@neptune> mxr@neptune.dsc.com (Max "Harmonic  
Obsession" Rible) writes:
> jml@visus.com (Jim Large) writes:
> >I am something you all have seen with your naked eyes.
> >I am a servant you all have employed. 
> >I can travel faster than light (you have almost certainly never
> >    seen me do it).
> 
> >What Am I?
> 
> A beam of light, from a flashlight or searchlight or what have you.
> You can make one appear to move arbitrarily fast by swinging it at
> whatever rate you please.  Since it's not the spot of light on your
> extremely-distant screen that's propagating, it can appear to move
> at speeds faster than that of light.

DING!

This is the answer I was looking for although to be really pedantic, I
would have added "the projection of ... onto a surface".

I've seen the same answer in my mail, and also:
  "A shadow"	-- Kind of the same thing, although I don't know off 
		   hand how many of us have USED a shadow.

  "The intersection of a pair of scissors"
		-- Cool idea, though I doubt that we'll ever make the 
		   the scissors which are perfect enough to actually 
		   do this experiment.

-- Jim L.

P.S.:  My appoligies to the one individual who flamed me (and also 
	gave the right answer) for posting a riddle to such a serious
	newsgroup.