This question already has an answer here:
Today, while working through the Close Votes Review queue, I was distracted for a moment and clicked to close a question for the wrong reason.
So I opened the question page and rescinded my close vote.
A message popped up saying that I would not be able to vote to close the question again, which is exactly what I wanted to do.
So my question is, why are users disallowed another close vote after rescinding an earlier close vote?
Firstly, thanks to our mods for the migration.
The linked possible duplicate question certainly does cover much of the same ground, and more. Like this question, it has generated lots of interesting discussion, but no definitive answer. The slight difference in this question is that I was seeking to correct an error.
The system disallows such repeat votes. It seems to be a design decision. It doesn't matter which of the questions is answered, but it would be good to hear the definitive design rationale for the policy decision.
A question linked to by the "possible duplicate" does contain the answer I seek: Closure vote - Changing closure reason.
The answer boils down to open to abuse.