Eventualism is a tendency amongst Wikipedians that focuses on the eventual value of Wikipedia in the long-term rather than the immediate value. Contrast immediatism; the opposite viewpoint (see WP:NOW).
Historically, the eventualist perspective has been strong, as Wikipedia was of little current value, so its value in several years' time was of primary importance. As Wikipedia has grown in practical use, a more immediatist approach has won adherents. If Wikipedia ever approaches its target, the immediatist position may triumph, but for now there is still a tension between these differing schools of thought.
It is reasonable to suggest that the target can never be completely reached because by definition a perfect encyclopedia will move with the times (Latin: tempora mutantur). Some eventualists believe that Wikipedia is an ecology of ideas which breeds quality in the long term and so believe in trusting the process. Others believe that the nature of the Wiki is such that any controls which immediatists think should be used to guarantee total quality are bound to be useless in practice and potentially harmful to the project.
In stark contrast to an exclusionist, an eventualist has no objection to large chunks of unwikified text and trusts that, eventually, someone will fix this, where an immediatist or exclusionist would be concerned that they will reduce the perceived professionalism of Wikipedia.
Eventualists follow inclusionism with respect to stubs and other low-quality articles, though they may well concur with deletionism with respect to articles being considered for deletion for reasons such as lack of importance. Unlike deletionists, eventualists would rather give an article on a notable topic a time to evolve and improve than delete it. On the other hand, an article on a dead non-notable person will almost certainly forever remain an article on a dead non-notable person. Such articles have no place in the encyclopedia that the eventualists envisage.
Eventualism is largely consistent with incrementalism, though the two have different reasons for their similar views. Whereas an eventualist believes that Wikipedia's worth increases with time and movement towards a never-reached completeness, an incrementalist believes that the same processes will inevitably lead to information once judged as non-notable becoming seen as more notable. As such, it is quite possible for a wikipedian to be both eventualist and incrementalist in their views.
There are three major types of eventualist:
- Absolute eventualist
- Ignore AfD and policy pages at all costs, and trust that in the end, the community will treat articles appropriately, even if they don't make the right call the first time around (or sometimes even the second and third time).
- Optimistic eventualist
- Occasionally try and intervene by commenting on AfD and policy pages, to try and speed up the process of reaching the right outcome eventually.
- Pessimistic eventualist
- Believes that Wikipedia is eventually going to fail anyway, so doesn't bother to participate in any of it.
Beware the dangers of factionalism.
Eventualism's limitations 
Eventualism can be used to justify almost any policy on the grounds that any harms it might cause will eventually not matter. For example, deletionists can argue that even if good content is deleted when it didn't need to be, someone will eventually get it right by creating from scratch a page that can survive AfD. Or if a banned users' useful contributions are removed, it won't matter because eventually someone will add the same content he added, using the same sources. If we want to go to the extreme, we could argue that nothing we do is harmful because in the long run, we are all dead anyway, and the heat death will destroy Wikipedia no matter what we do.
Barriers to eventualism 
Eventualism is closely related to the wiki way of making mistakes easy to correct rather than hard to make. The wiki way applies in both directions, though — a measure intended to be corrective should also be easy to reverse if it turns out to be a regression. But suppose, say, an article is deleted. If only a handful of users have access to that deleted content, it will be hard to restore. Thus, over a long period, a great deal of progress could be made toward improving an article, and yet if can be destroyed in one fell swoop, in such a way that it is difficult to reverse that deletion action, then deletionism may win over eventualism.
Also, Sanger's Law tends to preserve the status quo, resulting in stagnation of policy and culture. It is one thing for certain improvements to come slowly; it is another for a system to be set up in such a way as to prevent certain improvements from ever occurring.
See also 
- Conflicting Wikipedia philosophies
- Eventualist Wikipedians
- Anonymous User Protection Squad (AUPS)
- Association of Eventualist Wikipedians
- Association of Inclusionist Wikipedians
- Association of Deletionist Wikipedians
- Association of Mergist Wikipedians
- Association of Wikipedians Who Dislike Making Broad Judgements About the Worthiness of a General Category of Article, and Who Are In Favor of the Deletion of Some Particularly Bad Articles, but That Doesn't Mean They are Deletionist
- Transwiki:Constructionism and reductionism (wiki)
- Don't demolish the house while it's still being built (essay)
- Give an article a chance (essay)
- Proposed policy for wiki closure
- G5. “None of these sockpuppeteers have access to magic sources: if the article was truly worth having, it will be recreated by someone completely independent of the sock at some future date.”