The twisted effect gradually goes away, and soon everything is normal again. You turn back to Sir Isaac Newton.
"Just because a few strange twisty things happened doesn't mean I'm going to let you off the hook," you say. "I still have a question for you. Are you ready to answer it?"
"What's the question?" Sir Isaac Newton says, dropping his hand and raising his head to look at you.
"Is there such thing as gravity, which would make my napkin fall off my lap if I stood up?" you ask, grinning. The white-cloaked figure is going to be in for a surprise. Sir Isaac Newton stares at you for a while, then throws up his hands.
"That's preposterous! You don't expect things to just ... I don't know, fall, do you? Without anything making it?"
"Well, there is something making it," you say, slightly shocked that he didn't agree to what he himself had discovered. "It's called gravity."
"How can that be making it fall if it doesn't exist? Tell me that!" Sir Isaac Newton says, crossing his arms and smiling smugly.
"Because it does exist!" you say, frustrated. Why isn't anyone believing you?
"Fine, do the Napkin Test," the white cloaked figure says, who had been silent until now.