The belief that the publication of the diary will successfully expose Ozymandias strictly speaking is a conclusion, not an assumption. The basis for the conclusion? Dr. Manhattan, who sees the future, plainly implies that Ozymandias' plan comes undone.
I disagree. As usual, Jon is speaking in very esoteric terms. He means that history is long and even should Ozymandias be completely successful - this is only in the short term - though the short term to an immortal being like Dr. Manhattan may encompass a thousand years or more. Remember that the quote associated with the architect of the grand plan "Look upon these works, ye mighty and despair") is from a poem by Shelley. The short excerpt used in the book seems to be about the horror Veidt is enacting, but the rest of the poem gives the larger context to Jon's words:
"And on the pedestal these words appear:
`My name is Ozymandias, King of Kings:
Look on my works, ye mighty, and despair!'
Nothing beside remains. Round the decay
Of that colossal wreck, boundless and bare,
The lone and level sands stretch far away".
Shelley's poem is about the hubris of an ancient king whose only mark upon the modern world is the ruins of his once great statue. In other words, his works may have been mighty once, but time marches on and leaves them in nothing but decay.
In addition to being awesomely powerful, which means he's a winner, which means what he says is good stuff,
I don't think Moore is interested in winners and losers at all in this book.
there's very little else he could have meant when talking about how things are never ended. Plus, since he came to help humanity, even by the love standard he's at least partially redeemed as a good guy. Which means what he says is true.
Again, I disagree. Goodness does not equal truth - certainly not in the world of Watchmen.
Also, Rorschach is so unbelievably cool that what he does can't be expected to fail.
While numerous readers found Rorschach to be "uneblievably cool", that does not mean he was intended to be so. I found him repugnant both on this reading and on my original one when I was 16. Many reviewers remark on this as well.
Also, if people believed that accusations against Dr. Manhattan, they'll believe the accusations against Ozymandias.
The accusations against Dr. Manhattan happened dramatically on live television and came from a reputable source. The only person in the book ever shown reading the New Frontiersman is Rorschach so it is implied that the magazine has little reach and what reach it has is to fringe elements. For instance, it prints vague conspiracy ideas about the missing artists and scientists - but no one believes that. No action is taken by the government or anyone else. This is a pretty direct indication by the author of the idea that the truth is out there, but in a garbled form that no one believes.
Also, the assumption that an extra-dimensional squid would naturally murder millions is kind of nuts. But when look people look around afterwards and see Ozymandias has essentially taken over just as if he was prepared for the crisis, some will ask, "Cui bono?"
Veidt explains at least twice that the murders occur because they incorporated a psychic human brain into their faux being and it was this that made so many people die from neurological overload.
As for people looking around and seeing that Veidt has taken over - no one has any reason to look around unless 1) they read the New Frontiersman, which apparently few people do, 2) believe the particular article that is constructed out of Rorschach's odd paranoid ramblings and 3) jump from Rorschach's conclusion that Veidt is behind the mask killer (keep in mind, Rorschach concludes and mails his journal before he and Dan have anything but the vaguest notion of Veidt being involved in something heinous) to Veidt being behind the astonishingly unlikely interdimensional creature attacking New York.
Also, the details in the diary will be supported by investigations. For instance, the cops who investigated Edward Blake's murders will quickly realize Blake really was the Comedian. The diary will be authenticated by that sort of thing.
Perhaps - should the police pay any attention to a radical right wing conspiracy rag, which they apparently didn't when it published an article about disappearing artists and scientists. And even if they conclude that Blake was the Comedian and Veidt was somehow behind his murder and perhaps even the accusations that drove Dr. Manhattan away - it's still a big jump to the attack on New York.
Also, given the nearly universal assumption in thrillers and mysteries is that exposure of the plot suffices to defeat the plot, it is something of an assumption to interpret it otherwise.
I don't believe the plot could possibly be exposed by Rorschach's journal which doesn't even have half the information regarding Veidt's ultimate plan. Lacking exposure, there's no chance of defeat.
Obviously, "truth" as what the good guys say is more narrative convention than a logical argument. Still, after all, this is a fantasy universe where there's a Dr. Manhattan, Ozymandia and Nite Owl. Whatever the deconstructive intent, it still demands the reader buy into narrative, which means such narrative conventions, no?
Not if it's purpose is to directly undermine them. The entire book is about flipping the assumption of superhero's goodness and rightness on its head. Far from being good or right, Manhattan watches Blake murder the pregnant mother of his child and barely blinks an eye. Rorschach, Blake and Veidt murder without remorse. These are directly counter to the assumption of the main characters being good or right.
Actually, the only reason to think Rorschach's diary will fail of its purpose is that Dr. Manhattan retroactively endorsed the plan by killing Rorschach. Dr. Manhattan, as the ultimate winner, a living god, of course must be good.
I disagree. Dr. Manhattan is shown over and over again to be beyond human morality. He can barely even grasp it. He does at last come to see that the specificity of each individual life seems to indicate some sort of value - but that's not enough for him to be moved by the deaths of millions in New York. He can still abstract the whole thing and decide that either, it's for the best, or, he really doesn't care that much. I often find his final scenes to be ones of impotence and resignation. "I'm leaving this galaxy for one less complicated." That's rather throwing up his hands.
But I think Dr. Manhattan could kill Rorschach because he didn't like Rorschach. (I would swear it was impossible but Rorschach's the favorite character by far, with the nearly as unlikable Comedian his only competition. So what do I know? The essential point is, I don't think Moore likes Rorschach.) I think Dr. Manhattan would be quite capable of letting Ozymandias try to take over the world and fail because he was pissed at Ozymandias and wanted Ozymandias not just dead but even more humiliated.
I think it is well established in the narrative that Dr. Manhattan has next to no opinion, and certainly no emotional reaction, to any individual human except possibly Laurie, who he cares about in sort of a vague way.
I will say I always found it interesting that while Dr. Manhattan lost any interest in things human after his transformation - he still is compelled for a good long while by sex and a pretty shallow attachment to it. He ditches Janie for Laurie because Janie is aging. Seems even if a man becomes a God he's still going to be motivated by a hard dick.
Dr. Manhattan's epiphany about love and the meaning of life is so much nicer than the usual thought processes of the other heroes, it is easy to forget that it doesn't quite jibe with what Dr. Manhattan does, which is murder Rorschach, then abandon humanity to Ozymandias. It seems to be something of a shout out, invested in the biggest winner (who is therefore coolest and rightest character of all.) I suppose that Moore doesn't just think his characters are bad, but that people in general in bad, and that no one, not even a superhero, could even fool them into getting along. We'll all rot together and kill each other in the end, in spite of the value of life attested by Dr. Manhattan's soliloquy. Or so the moral of the story seems to be.
I'm not so sure Dr. Manhattan's epiphany has anything to do with love. Moore seems to think the universe itself is bad - in that it can contain the miracle of individual life as Manhattan attests, and then have that life be as twisted and brutal as the experiences Rorschach relates and the horror that Veidt enacts. Watchmen is a deeply nihilistic book since it concludes that even if there is world peace, it will be because most people are igorant pawns living a lie thrust upon them by those of wealth and power.