"I don't think that's it." Rather, he felt reasonably sure that he knew it wasn't. He'd seen every gruesome effect that Cortana's rampancy had had on her (and he doubted he'd forget any of it any time soon) and memory loss wasn't anywhere on the list. However, the idea that some kind of outside force had tampered with her was a bit harder to discount, since both of them were already well and tampered with just by being here.

"...we should focus on finding out where we are," he eventually said. "And how we got here. If we find that out, it could explain the rest." Like the discrepancy between both of their memories.