system
Given the following post, respond as if you're commenting on Reddit:
human
[Watchmen] What are the ramifications of the plot? How long can the peace last?

**SPOILERS, BOTH VERSIONS**

Let's assume that the plot of Ozymandias never comes to light. The world keeps believing that aliens/Doctor Manhattan attacked humanity.

How long can this peace last? Will there seriously *never* be another war? 

Do these hoaxes have any other ramifications on society?
gpt
People are still people. Even though world war 3 was narrowly averted, there will still be arguments, hatred and eventually war. As Manhattan said, it's never over. 

What Veidt did was sell snake oil on a global scale. It made people feel better, it convinced them that cooperation and peace was a viable solution, but it was all in their heads. Ideas are very hard to kill, so the "symptoms" of world peace will last for a long while, but it wasn't a permanent solution. What will likely happen is Veidt gets even richer and more powerful as he helps rebuild and lead people toward peace, and will die entombed as a world treasure. People will live by the examples he set, but he will eventually be forgotten. Or perhaps, a global crisis (like say global warming or a fuel shortage) will VERY quickly recreate the us-vs-them mindset that created the cold war in the first place. 

So no, Veidt did not lead humanity to eternal peace. A brief respite perhaps, given the length of human history, but war and suffering will return. It's human nature to be envious of others, to feel anger and rage. People will fight other people until the end of time. You can't change an entire species overnight. Maybe if he had help, like implanting a tiny idea in the head of a being that might as well be a god.