What are you talking about "cannot be solved"?

Per the article "The only place that’s still entirely accurate is Wikipedia, hilariously enough." And for tvtome, "It was a user-edited wiki for TV shows. To be an editor for the big, popular shows you had to prove why you were qualified"

Clearly there are systems that are much more robust against tampering than others. I'm sure dozens or hundreds of people came across this streets shark stuff on IMDB and thought "This is an error" but had no way to report it on IMDB. Wikipedia solves that problem (and in the event of dispute there's a full history).