There are 3 boxes, 2 are empty while the third contains £10,000. You select one.!

There are 3 boxes, 2 are empty while the third contains £10,000. You select one. I know where the money is; of

the two remaining I open one to reveal nothing. I now give you the option to swap boxes; you keep the contents of the box that you choose. Do you swap? Why did you make that decision?

1 week ago
I agreed to offer to let you swap before the game commenced.

I would swap as there is a convincing argument why in 'The Curious Incident of the Dog in the Nighttime', but I can't quite remember it right now.