I + XI = X
One plus eleven is ten? “False,” she said immediately.
“And can you see any way this could be true?”
Ambra shook her head. “No, your statement is definitely false.”
Langdon gently reached out and took her hand, guiding her around to where he had been standing. Now, when Ambra glanced down, she saw the markings from Langdon’s vantage point.
The equation was upside down.
X = IX + I
Startled, she glanced up at him.
“Ten equals nine plus one,” Langdon said with a smile. “Sometimes, all you have to do is shift your perspective to see someone else’s truth.”