How is it that you or I can know what answers the OP finds enhance her understanding?

Well, we can at least assume that emptiness does not enhance understanding except in specialist philosophical contents:

Let A be the set of information understood by the OP in reply a and B be the set information understood by the OP in reply b. If B-A is empty then b does not enhance the understanding of the OP of a. I agree that we may not directly know what B-A is because B and A are in someone's mind, but if we observe that b-a is empty then this implies B-A is also empty. Although language philosophers might come up with some weird exceptions - these anyway cannot be considered the intention of b.

One world, one people

In reply to Re^4: In support of downvoting plagiarism by anonymized user 468275
in thread In support of downvoting plagiarism by anonymized user 468275

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