As it stands right now, I think the [mechanics] tag is useless in the best cases, and a little harmful in the worst cases.
The problem is that it way too broad to be considered a topic. The number of possible topics inside it (quantum, classical, statistical, ...) is very large, and they are very different from each other. So when someone uses the [mechanics] tags, one of two things happen:
- They also use a sub-mechanics tag (like [quantum-mechanics] or [classical-mechanics]), in which case the actual [mechanics] tag is completely useless.
- They are led to believe that just the [mechanics] tag is enough, in which case it is actually harmful, because it almost the same as leaving it tagless. Just saying a question is about mechanics doesn't give the reader any clue at all of what he should expect to find in it.
A quick search shows that this tag is being used both alone and with subtopics. So I say: Consistency. We should decide whether to get rid of it, or to encourage people to only use it with subtopics.
Should we sart removing the [mechanics] tag, and replacing it (where necessary) with its subtopics? Or should we just add subtopics where missing?