I can sell you the bottle with the water in it.
For example, if I only have 3 milliseconds to profit off an information advantage, I'll need to pour really fast.
Then, you can say,
Or, I can pour the water from the bottle into your glass.
In this approach, we have to share how fast we want the water to be poured. We also get a chance to react to other people's pouring preferences.
“Wait, hang on, why do you want to get rid of the water so fast? WHAT DO YOU KNOW THAT I DON’T?
At that high speed, I'm only willing to pay a lower price."