I think more topics should be locked more often, for many totally valid reasons.
- you got the answer you were looking for.
- someone accidentally or purposefully hijacked the topic.
- the topic became a series posts with opinion replacing fact and egos and emotions replacing user experience and common sense. We have all seen this one happen far too often. Macho BS postings help no one.
If anyone wants to continue a topic that someone else has locked, there's nothing stopping them. If a sub-topic has become important to you, then renew it under a more appropriate subject. The locked topic is there and will not be removed, as far as I know.
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"Those who do not remember history are doomed to repeat it."