Wikipedian Protest (xkcd.com/285/)

Wikipedia articles are supposed to be supported by evidence.  This is described in the Verifiability content policy.

The Verifiability policy is very useful as you explore, for two reasons:

1. The discussions show you what kinds of statements or ideas require support or evidence in conversations about your topic area.
2. The citations themselves are resources you can use.

Check out this video for more background on why citations are so useful and helpful: