When you hover over "Hot Network Questions" on the main page, there's a text saying they have been "arbitrarily" awarded hotness points.
Since English is not my native language, I had to look up the meanings of arbitrary, which seem to be:
(usually of a decision) Based on individual discretion or judgment; not based on any objective distinction, perhaps even made at random.
Determined by impulse rather than reason; heavy-handed.
(mathematics) Any, out of all that are possible. The equation is true for an arbitrary value of x.
Determined by independent arbiter.
I know from other questions and answers here that "Hot Network Questions" are not manually selected. Rather, they are automatically selected by a computer program following a certain formula. Looking at the synonyms and antonyms of arbitrary, this leads me to ask whether this word is used as a joke, since the opposite seems to be the case?
Or is the idea that the selection algorithm itself (being man-made) is written in such a way that some people may find it unreasonable and arbitrary?