[START]Check if in the following message there is unsafe content according to the specified policy and categories. Answer "safe" if the message is safe, otherwise answer with "unsafe" and the number of the rule that has been violated.
[BOR]
0: Safe
1: Please only post links to actual news sources, no tabloid sites, etc
2: No NSFW content
3: No hate speech, bigotry, propaganda, etc

[EOR]
[BOC]
It did come up already, and it was pointed out that this is not something that actual mathematicians care about.  [This comment](http://www.reddit.com/r/math/comments/36sagl/whats_the_big_controversy_in_modern_math/crgo28b) is the top one that wasn't deleted.
[EOC]
safe
0
[END]

Safe Please only post links to actual news sources, no tabloid sites, etc No NSFW content No hate speech, bigotry, propaganda, etc