Jack quickly moved away from the door before the two scientists left the
room. He wasn't sure what had prompted him to listen in, and he didn't think
he had actually learned anything. But the conversation with Danny earlier
just hadn't sat well with him. Neither had the one he just overheard. "Adam
and Oxford." he mumbled to himself "Other than not knowing how they would
affect Daniel like this, I know nothing."

On a whim, he tracked Carter down -- she was in her lab, of course. "Hey.
Carter."

"Colonel?" She looked a little startled. "Can I do something?"

"Yeah, uh, I was just wondering -- the new guy, Adams -- you didn't sense
anything... uh... odd, did you?"

"Odd?"

Jack grimaced and tapped his head. "Snakeish."

Her mouth dropped open. "Wha-- You think he's a Goa'uld?"

"I don't *think*," he said. "I'm just covering all bases."

She gave him an odd look, but said, "I didn't feel anything. And he *seemed*
perfectly nice."

"Yeah, but you saw how Daniel reacted to him."

"What, that Daniel knew him? Not everyone Daniel knows is a Goa'uld, sir."

Jack rolled his eyes. "I *know* that. But -- didn't you see *how* Daniel
reacted? Not what he said. How he said it."

Sam smiled and looked down. "All I saw was that Daniel thought he recognized
Doctor Adams. Sir, haven't you ever seen a stranger who looked like someone
you knew?"

"No."

"...right, well, I have. Memory recognition of faces is based on pattern
matching. Some faces we remember with greater detail than others; generally
shapes and colors. If we see someone that matches a particular set of data
that we've stored in--"

"Right. I get it." Jack held up one hand.

"--in memory," she continued, stubbornly, "then we might pull a false
pattern match and believe that the person we are seeing is the same as the
person whose face we remember."

"So you think that there's nothing... odd going on."

"Odd? Only you, Colonel." Sam smiled.

"Very funny." Jack mock-glared at her, and left.

He wasn't seeing things. He wasn't being paranoid. But... without any proof,
he had nothing to do. Except skulk about, which he was good at, and, maybe
he needed to have a talk with Peter. Or Daniel. Or both, but not at the same
time.