We do get a lot of bike identification questions, usually of the very specific format of "identify my BMX by serial number". Over the last year or so it has become a tradition to close them as duplicate of "Why shouldn't I care what model/make/year my bicycle is?". Duplicates are a mechanism for linking to the same question previously asked that may already have an answer. Asking for bike identification is certainly not the same question as the pseudo-question for why it does not matter.
In great tradition of ranting at question body, I think this is bad idea because:
- Stack exchange already has unwelcoming reputation and closing honest questions as duplicate of the opposite does not really help
- It prevents answers if someone would actually have one
- It is intellectually dishonest
As far as I know we don't get any kind of bonuses for closing questions quickly. So, why don't we instead do one of:
- Just let them go unanswered with comment explaining why these are difficult to answer. If someone digging through old questions happens to know, good for everyone.
- Declare bike identification off-topic. Shopping recommendations and valuations already are, so it should not be impossible.
Jeff Atwood, the founder of StackExchange, has also an interesting view on duplicates and why they should not be closed too quickly.