I am pretty sure that note wasn't written there before. The author must have updated the article after I posted this question. Though "nice" is still somewhat vague to me. Nice in what way? Smaller numbers are nicer? Negative and positives make it nice?
The second part of the answer is more useful information, "Normally, you’d shift by the mean."
The second part of the answer is more useful information, "Normally, you’d shift by the mean."