You May Be Dreaming, Is It Possible?

There's an interesting move there to 271. It says, let me grant the premise that it's possible therefore that all the sensor experiences I am now having are mere dream images. But so far as I know, nobody ever has, and I don't know how anybody ever could. How could anybody prove that it's logically possible that I'm dreaming? Because that's the only claim you can make. You can't counter me on my experience. You can’t counters me on my sense data. All you can do is say it's logicallyossible that I're dreaming. So yeah, lots of things are logically possible. And I don't think I've ever seen an argument expressly