2. 1950s mindset of a dystopian future after a nuclear holocaust. Now, while this isn't specifically aliens, we are speaking of the 1950s and the Roswell incident. People in the 1950s really believed "they" were watching us.
I can't remember if it was in this thread or one of the half dozen other ones in this sub-forum, but I've argued before that "it fits because it's from the 50's" doesn't always cut it, exactly. In Fallout, you have two contrasting "worlds" that we're dealing with - the futurist utopia of Pre-War civilization, and the desolation of the Wasteland. The "it's retro" argument only means that it was relevant to the World Before, and not necessarily that it needs to have anything to do with the rubble that you're treading through in Fallout. Aliens having been interested in our world back before we blew it to smithereens is one thing - I'm certainly not going to argue that it doesn't fit that retro vibe; it does. But that doesn't mean it belongs in the "contemporary" setting during which the actual game, itself, takes place.
If it references the 1950's then surely it "fits" into pre-War civilization. But the whole theme of Fallout hinges on the fact that we blew the smithereens out of that world - you only encounter these references as rubble; destroyed vestiges of a once-great world. For example - George Jetson would have been perfectly at home in Fallout's universe, circa 2077, but he got vaporized during the War. Seeing George Jetson's desiccated corpse is conceivable - seeing him actually flying around between toppled buildings would be pushing it. In other words, "it's retro" only justifies something having existed pre-War; it doesn't mean it's relevant to the post-War game; save as the wreckage through which you make your journey. It's not relevant to the world you play in.
This is why I don't have a problem with the Crashed Alien Spaceship in Fallout 3. That retro stuff essentially comprises the corpse upon which the world of Fallout is set.
5. Bethesda has decided to release a full DLC about aliens. Being the final arbiters of canon in what is now their intellectual property, they do have the final say. Either that or this is the biggest easter egg I have ever seen in any game.
That only goes toward proving that it's "official," not that it has any need to be "canon." Which I don't think anyone's arguing. Of course it's "official," or "approved" content, or whatever. Bethesda itself put it out. No one's saying otherwise.
"http://dictionary.reference.com/browse/official." "http://dictionary.reference.com/browse/canon." Two different words, with two different meanings. This keeps going on and on and on, to be honest. I still think what's really at issue is that the word "canon" has pretty much lost all meaning these days - or at least doesn't mean what it used to in regards to issues of fandom. I don't even care all that much about any of this. To be honest, you guys might as well be trying to tell me that Mothership Zeta is "awesome" as well - no one's ever going to be able to get me to say that an optional part of a game that I have objectively "played" is so important that I have to consider my character as actually having been abducted by aliens - even though it never happened in my game.
Now, had Black Isles kept the IP, and had released a Fallout 3 with an encounter similar to MZ, I can honestly say that I doubt there would be anywhere near the level of discontent among those saying that this is not canon. Be honest here and admit it.
If Black Isle had made Fallout 3, included an
optional alien encounter that I could
decide for myself whether or not buy,
then made a Fallout 4 which directly referenced the events which occurred in that optional content - then it would canon.
The rest of your arguments only point to why it could "fit," not why it has to be canonized.
I've participated in no less than a dozen of these sorts of threads, which have been active since Mothership Zeta was even announced. Thus far not one single person has ever even attempted to answer the most basic question I've ever put forth - I have played Fallout 3, and that play-through included some of the DLC on offer. I started at the beginning, and I played through to the end. I have "played" Fallout 3. There were things which happened to my character, that I experienced, and those things "happened." Because I saw them, and they occurred. I do not have Mothership Zeta. Did not buy it (as it's my right to do.) Nowhere in any of the coding within the various programs that make up what is Fallout 3, is there a living alien or an abduction scenario. I finished Fallout 3, and was never abducted, I never met a live alien, there were no quests involving aliens in any way. So can someone please, for once, answer me this very basic question:
How am I supposed to feel about something that, objectively and factually, did not happen to my character? Sure, it's official - Bethesda put it out there, they made it. But I never saw any of it. GrayeWolfe, you bring up retconning, and that's what canon is capable of doing. "Canon" is when in Fallout 2 it was retconned that even if I had slaughtered everyone in Shady Sands during Fallout 1, that Tandi still survived and helped to build what would become NCR. "Canon" says that no matter what I did in Fallout 1, that in actuality I saved that town and rescued that NPC. "Canon" is when Soul Reaver begins by essentially telling me that I chose the "evil" ending in Legacy of Kain.
So what are you guys looking for when you insist that Mothership Zeta is "canon?" Are you telling me that it's so important that I must be considered to have been abducted by aliens, even if it never happened in my game? Because that's kind of what the word means to me. If you're not taking it to that level, then aren't you really just saying that it's "official content" (which no one's arguing against,) and can't I simply be allowed to blissfully ignore content that I made the educated and justified decision to not purchase?
Edit - tl;dr:
Did Aliens exist in Fallout's Pre-War civilization? Possibly (and if pushed, I'd have no problem saying "yes.")
Do they exist in Fallout's contemporary world during which the game is set? If you bought Mothership Zeta, then yes. If you didn't, then no. Does it really need to be any more complex than that? And why can't that be something everyone's can be happy with?