Keller: Wait – you're not seriously thinking of giving him our research on the Hoffan protein?
McKay: Well, why not?
Keller: Because we'd effectively be giving the Wraith the means to reproduce the drug and potentially infect and kill millions.
McKay: Theoretically, yes, but practically it really wouldn't be in their best interest to poison their own food supply, regardless of whether our research helped them to come up with an antidote or not. No, I think the more likely scenario is that they find an antidote that works as a short-term solution to the existing threat, then they work on weaponising the protein – you know, coming up with a more effective delivery system, one that cuts out the middle man – in this case, the human victims. No, what we're doing is giving them the means to kill each other off.
Sheppard: So, when you put it that way, giving them our research could be a good thing.