Is There a Red Patch?

Wittgenstein: Here's a red patch here. And here's my hand. Those are both even though they're different kinds of propositions. He would deny this is a hypothesis that can be tested. But well, here's a redpatch is not a hypothesis because again, we can't conceive of being wrong. It struck me as a non sequitur. I was not able to connect it to the notion about the planet being a certain distance from the sun as a hypothesis saying here is a red patch is not a hypotheses. There's no analogy there. So what does Wittgenstein mean by saying he'd be right if he's saying that the physical object has the same