Wikis work in a open way, if they are niche, to not attract trolls or spam too much, otherwise they work by restricting guest rights, banning ip, etc.
Usually pragmatically.
"No, it's not. We're talking here about moderated Knowledge bases. Of course, if it's a poor or even unmoderated wiki, this would be a problem. But I've never got the impression that Arch-wiki had this problem."
And arch wiki (and wikipedia itself) is a outlier, not the average wiki, that usually is outdated or plain wrong with no one caring.
About sharing information in general.
Wikis work in a open way, if they are niche, to not attract trolls or spam too much, otherwise they work by restricting guest rights, banning ip, etc. Usually pragmatically.
"No, it's not. We're talking here about moderated Knowledge bases. Of course, if it's a poor or even unmoderated wiki, this would be a problem. But I've never got the impression that Arch-wiki had this problem."
And arch wiki (and wikipedia itself) is a outlier, not the average wiki, that usually is outdated or plain wrong with no one caring.