This page is an essay on notability.
Anyone can edit Wikipedia. This essay addresses some aspects of what topics and items are valid for inclusion on Wikipedia.
Anyone who finds a topic that is worthy of inclusion and is not already reflected on Wikipedia can add it to Wikipedia; how they do so should be governed by the rules and guidelines of Wikipedia. If no article exists that can reflect or encompass that topic, then anyone can create a new entry on Wikipedia to encompass that topic.
What are some examples of this?
Some questions to help you understand.
So how do we define the full scope and range of facts that ought to be here? and how do we then add those facts?
The scope of what facts should be included is subject to ongoing debate and discussion, and evolves and develops on a constant basis. Some guidelines have been defined through public debate, others simply through habit and general usage.
For example, not every fact that pertains to general U.S. governmental processes may be included here. However, facts about which specific individuals served in the U.S. Senate have been deemed worthy of inclusion; in other words, any U.S. Senator from any time period is worthy to be given their own entry at Wikipedia.
If you do find a fact of genuine significance, and it is not reflected anywhere in Wikipedia, there are a few things you can do.
Below are some articles that you may find helpful.