Foresight Versus Hindsight

This is the situation.

Roo-kai has come out of the office, with (as he suspects) the incriminating paper.

He has asked Baby Pierre to take a photo of him with it, as evidence.

For evidence of location, Roo-kai needs a submarine in the back ground.

To accomplish this, Baby Pierre has asked him to turn round.

Roo-kai has turned around immediately.

Now the submarine is behind him. 

But so is Baby Pierre.

Baby Pierre must now make a decision.

Should he move round Roo-kai and take the photo from the doorway of the office?

Or ask Roo-kai to move back a bit?

Suddenly....

Tclik!

The signal that someone is coming! 

Did you..? asks Roo-kai.

No, whispers Baby Pierre. I didn't.

Quick, says Roo-kai. They both scramble back into the office, and hide under the desk.

Nothing happens. No one comes in. 

Are you SURE it wasn't you? asks Roo-kai.

Maybe it was me, says Baby Pierre. Did it sound like a camera?

Yes, says Roo-kai. But your tongue click signal also sounds like a camera.

That's why I chose it, says Baby Pierre.

Do you regret that now? asks Roo-kai.

We don't even know it WAS the camera, says Baby Pierre. What if it was someone else's camera?

Another spy? says Rookai.

Spying on us, says Baby Pierre. With their own camera.

If it was, where are they? asks Roo-kai. Wouldn't you have seen them?

I would have, says Baby Pierre, until you asked me to take a photo, and I had to turn round. After that, if anyone came into the shed, I wouldn't have seen them.

Check the camera, says Roo-kai. If you took a photo, that will explain the Tclik sound.

Baby Pierre checks the camera.

Photos of the half submarine, from above, indicating no periscope; and one last photo, the back end of Roo-kai.

It WAS me, says Baby Pierre. This is you from behind. 

So it is, says Roo-kai. It's not my best angle. 

Baby Pierre, wisely, remains silent.