That makes no sense, but it's sweet anyway. He pauses to search for a way to say the least, upset Jude as little as possible, and still tell the truth. As he understands it. There's a lot going on here.

"I..." He stops, considers, starts again. It can't be about him. "A year of memories. Gone. He's not, um, he isn't hurt or sick, or... I know that can happen. They have something that... that reaches into our heads, and-and how do we know anything?"