> Malicious edits don't scale with the number of articles, they scale with the number of edits and users. If all of a sudden Wikipedia gained 10 million more ar

> Malicious edits don't scale with the number of articles, they scale with the number of edits and users. If all of a sudden Wikipedia gained 10 million more articles, there would not be more malicious edits per day than there are now without the amount of malicious users increasing. But some fraction of malicious edits aren't caught as they are made, and those will remain until they're accidentally noticed by someone and fixed. That's also true about honest errors and mistakes. If you add 10 million more articles, they'll either distract "accidental" QA from more popular articles, or (more likely) not receive an adequate amount of accidental QA at all.