Quote - I don't think you need a mirror to do this experiment? Just take some object, like a monitor [or anything, maybe a book would've been clearer], have you and a friend stand in different places viewing it at different angles. You can both see it right?

Yes, you can.

Here's where the whole thing breaks down, though...

Refine the experiment, as I hinted at earlier.  Replace the flashlight/torch with a laser set to emit a single photon.  Now, according to Relativity, there is only one photon, which will hit the mirror and bounce back toward somewhere or other.  Let's assume there's a random direction it would bounce to (there are several complex reasons why it isn't random but they don't matter for the moment)  In which case, being a single photon and not necessarily bouncing in the direction of either viewer, they have a less than 50% chance of seeing it, right?  Wrong.  Both viewers (or as many as you want) will see the photon, no matter what you do.

Now, remember, you're not seeing an image of a photon, you are seeing a real, genuine photon.  Added together, that's more than you put into the system in the first place, by at least double.

Now, that's what I mean about weird.  :)

Coppula eam se non posit acceptera jocularum.

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