It's one theory. Like I said, I'd need an explanation as to why I don't reflect any of the physical changes I went through during that time. Or rather... not all of them. Externally, I look the same as I had before. But internally...? I don't think it's exactly the same.

[He starts cleaning up the drone pieces, setting them aside for now.]

Another theory is that these memories were already present in our brains, but somehow repressed or erased. And whatever happened during the seven days we couldn't be detected by URSULA was enough to restore those memories. It would mean that my physical body was a copy taken from an earlier time, and my mind imported into it and made to believe that they were one and the same.

It's hard to say one way or another.