Since the words are being spoken by a Vulcan, can we interpret 'human' to mean 'humanoid'?

Or, we could debate what 'human' actually means. According to Sargon, his ancestors colonized large portions of the galaxy; would all the descendants of their various colonies be 'human'? The Lads postulate a similar colonizing effort in "Paradise Syndrome" to explain how a Native American culture could wind up on a distant planet.

Well, they didn't know about Sargon until late in season 2. And Mirmanee wasn't until early season 3.

But yes, Spock should have said humanoid.

Well still humanoid lifeforms seems to me rather limited for spores that need a host to live in symbiosis. From an evolutionary pov it would make more sense for the spores to have to use less specified hosts since that would increase the rate of their survival.

True enough. But it is what Spock said, and he should know.

Either way, though, it' s not as bad as the aliens in the Alien movies. They can only reproduce 1:1 with some kind of host, and since they usually seem to end up eating more than that for "food," they're a pretty bad species, as those things go. Not so bad as a weapon, maybe, but that's not really been established for certain.

The aliens in Alien was a bioweapon even in Scott's original movie Scott and their designer Giger designed them as biomechanoid weapons

Maybe that's one interpretation, but it's not definitive until it says so in the movies, and even then it might contradict something earlier and therefore be non-operative. For example, I don't believe David created them.

Now, in Alien 4 it sure looked like the Company was turning them into weapons for ITS use. But as for whether that was their original purpose, who knows?

Well it's not only mere interpretation since Scott's primary reason for choosing Giger's designs was that his design of the alien looked like something half biological and half mechanical and that he had wanted what Giger called biomechanoid nr 4 because the whole premise of the alien is that it was a weapon ,why else would that alien vessel have it's cargo bay filled with cocoons?The vessel on LV-426 was a military vessel and also Prometheus confirms this.And the whole Alien as a weapon thing wasn't something that Scott has invented for the new series of Alien because it always was his original vision for the alien.For further proof check out the two disc special edition of Alien and look at the extras and documentaries you'll find that a lot of rejected designs for Alien were used or further developed for Prometheus .and BTW the opening scene from Blade Runner 2049 was in an early draft by Scott for the original Blade Runner (when K is visiting the guy with the pot of boiling bug larva (in the original draft it was soup) and in stead of checking his eyeballs to check the Nexus' serial number in the original script he took out his jaw to check the serial number.

But that's just retcon, really, and now they're pretending that David really did it all, on which I call BS.

No it wasn't because the documentaries were made more than a decade before Scott made Prometheus and Scott in the making of documentary of 1979 says so that he imagined the alien to be a biomechanical weapon Even before the whole messed up production of Alien3 Scott around that time had showed interest to do another Alien movie but he expressed that he wanted to go back to the original alien and it's origin stories but since CGI was still in it's infancy the producers (Giler,Hill and Carroll)figured that this would cost way too much money for the designs alone and Fox basically was looking for an easy cash grab based on the popularity of the franchise and didn't want to invest too much money into the project.That was before there was a Harlan version ,Ward version(with the monks on a wooden planet) and finally a Fincher version of Alien 3.

But all that stuff is just behind-the-scenes maneuvering etc. If it wasn't on the screen, and it wasn't said, then it doesn't really count. Especially when they're now changing it so that David supposedly did it all. We don't really know what the Engineers (or, at least, their servants - the tall humanoids - since I don't believe those were really the Engineers anyway) were doing, because we saw very little of that in Prometheus. What we're being told NOW, in Alien: Covenant, is that DAVID is really the "Engineer" of the alien creatures seen in the first Alien movie and sequels. Which, again, I call BS on. But if you're going to believe what the movies are telling you, that's what they're telling you. DAVID, not the Engineers, created the Alien (1, 2, 3, 4) aliens.

Strangely, I think you're both right; there are compelling reasons to think that the people who created the Alien Xenomorph consider it a Biologically Engineered organism, but, this has not been made explicit in any of the canonical projects. Ridley Scott, who owns the Alien creature as much as any one person, seems to enjoy keeping the concept unclear. It could have evolved in a particularly harsh environment, it could have been designed in a test tube, or it could be some combination of the two - a noxious creature that was tinkered with genetically.

Actually, that was only true up until Alien: Covenant. Now it seems we're being told, explicitly, that DAVID actually created the aliens seen in the earlier movies.

I call BS for a variety of reasons, not least being that the alien ship on LV-426 seemed to have been there a LONG, LONG time. But as far as Ridley Scott is concerned, that's apparently his story, and he's sticking to it. And for those who choose to believe what a director is telling them, no matter how dumb it might be, you have to believe it too.

But my point about the aliens being a poorly-developed or -adapted species, is particularly true if they supposedly evolved naturally. Requiring a second organism to reproduce just ONE of itself, and then needing MORE of them - or of other creatures - to feed on too, seems highly inefficient. Then again, there's a lot of other flat-out BS in the movies too, such as the thing removed from Shaw in "Prometheus" somehow growing so big while sealed in the lab seemingly without any food source.

Maybe some people think it makes a cool horror movie to have creatures that grow huge and menacing without any intake of nutrition. But it's Im. Possible.

There are elements of Covenant that I'm frankly not buying. Why does the nutty robot want to create a horde of superaliens? Shouldn't motivation be a part of any character, even an artificial one? More importantly, how did that cargo of eggs that Ripley and Nostromo encounter way back in the original wind up crashed on that planet? How much time has passed?

Isn't it possible that David, an artificial life form emulating humanity, is recreating the alien as an artificial life form in emulation of something programmed in to his memory banks, a creature that already exists?

The reason was that David created the xenomorph was basically like as he said in Prometheus that he could plus ever since his inception (see the prologue of Covenant ) David was aware of him being superior to humans and ressented that he was treated like a slave although him being superior he also made the xenomorph because in his view the engineers weren't superior either plus one of them ripped off his head so that's why he released the black goo over the planet of the"Engineers" .Plus when David was freed of Weyland he could finally do what he wanted that as a superior being he could create.And still Scott's original idea for the alien was to be a weapon he has said it many times long before there was even talk about Prometheus . On both the single disc ordinary version on DVD and the special edition commentary track Scott distinctly mentions that the alien was some kind of weapon.For example the murals inside the Engineers cone shaped structure (which use to be a pyramid )were taken from designs made earlier in the preproduction phase of Alien. Also when you view Giger's' book Necronomicon where the prototype of the alien design came from, features images of creatures with both biological and mechanical features in their design.As for the "space -jockey" in Alien it was the same creature as the engineers only it was misinterpreted by Dallas as fossilised because it was wearing it's space suit which looks very organical from the outside.As for david being pre-programed to make the xenomorph well maybe but it seems to me that David basically started from scratch which was displayed in the "Chambers of Horrors"in Covenant where we can see the evolution of David's experiments.Also there is the twist of irony that David because of his love for Elisabeth Shaw makes her the mother (although she was infertile in Prometheus) of his "children" .

Sorry, but most of that just sounds like pretentious claptrap to me. And I don't care what ideas Ridley Scott supposedly had about the aliens, he didn't put them into the movies so they don't matter. He supposedly wanted Ripley and Dallas and the others to be having casual sex too, but that also didn't happen in the movie so his claims are just irrelevant. He could also claim that he was thinking of having a David all along, and I wouldn't buy that either. Some people - maybe those who read "Paradise Lost" in college and think it explains the universe, or something - might believe Scott is really deep and stuff, for freakin' re-telling someone else's story, yet! But I call it navel-gazing BS and claptrap.

And, really. David's love for Shaw? Who else was freakin' AVAILABLE????