>It's still an external factor? Why is it not relevant?
I am not *using* it. Check your quote from Wikipedia again. If I knew that the player were sick and likely to go NMR but had not been able asked for a pause, then that would be using out-of-game information. If I caused the illness to create an NMR, then that would be using out-of-game resources. But if I use only in-game information and resources in my decisions, then that is within the game.
If the mere *presence* of an external factor creates metagaming, or creates metagaming on behalf of those that it helps, then agreeing to pause is just as much metagaming as refusing to pause. The idea that considering the game position when deciding whether to accept a pause is somehow *outside* the game is just silly. You simply have an opinion (one I share, as it happens) as to what a good player should do, but it is not required by the rules, and the decision is taken entirely within the game. (But this point has already been made.)
There is still the issue of what the boundaries of the game are. There is a long tradition in Diplomacy that, as the game is sneaky and underhanded anyway, anything is fair game, including
* breaking into people's rooms to read, steal, or substitute orders,
* impersonating people by letter, phone, or email, and
* lying about people's out-of-game relationships to influence others' opinions about their likely in-game trust or lack of trust.
I don't think that anyone has stooped so low as to cause illness.
Although the FAQ doesn't say so, my impression of the standards here are that the game should be confined to this web site. Therefore, causing illness is out, as would be most of the devious tricks listed above. (Possibly cracking someone's account could be OK, but I expect that it wouldn't be; it violates the usual norms of Internet communities, in any case.) The FAQ clarifies that, even within the site, different games should be kept separate. That is, it is not intended to contradict Wikipedia's definition, but to clarify it by specifying where the game ends. Without such clarification, Wikipedia's generic definition is useless; you need to know what is outside the game.