Quote - 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.

This part I don't understand. It seems impossible to me that both people will see the photon.

It's not the tool used, it's the tool using it