I wrote a brief answer to this question, and almost immediately got a message attached to the answer, saying
We're looking for long answers that provide some explanation and context. Don't just give a one-line answer: please explain why you're recommending it as a solution. Answers that don't explain anything will be deleted. See Good Subjective, Bad Subjective for more information.
I didn't have the time right then to write a paragraph explaining what
sudo does, so rather than have a moderator delete my answer, I deleted it myself. Some twenty minutes later, another equally short and non-explanatory answer appeared and was accepted.
This episode is no big deal to me – it only took me moments to write my answer, and if someone else gets a few points of reputation for answering the question, I couldn't care less. But I am puzzled and curious: The message seems like a canned message. Does the software post such messages automatically, or does some moderator push a button to make it happen? Also, I don't see the relevance of the Good Subjective, Bad Subjective article to a criticism concerning either shortness or lack of explanations. Whatever might be wrong with my answer, subjective is not it!