Question: [This question about the sun's circumference](https://physics.stackexchange.com/questions/68120/how-is-suns-equatorial-circumference-measured/68125#68125), I answered with what I *thought* was a helpful answer - it seems that a couple of others found it useful (2 upvotes), but I am getting grief about the answer being "while strictly correct, but is enormously unsatisfying".

Why not then, if an answer is "enormously unsatisfying", post n alternative answer?

What have I done wrong this time?

Answer: 
I confess to being one of those people. I agree completely that you didn't need to delete your answer. The pinhole camera suggestion meaningfully added to the discussion. Reason is that you can't just take a protractor and measure the angle subtended by the sun.

Now the criticism was that we don't have a measurement of the distance to the sun. I hope that you don't take this to mean that *you didn't contribute* to answering the question, because you did.

At the root of the quibbling, however, was the fact that someone asked a fairly low level question that has an extremely difficult answer. Why do you think no one else has added an answer after that discussion? Probably several people looked into it and quickly realized the problem is more difficult than they thought.

Using references on Earth, how do you establish an astronomical length scale? That question is **insanely** hard. But is that what was asked? To be nit-picky, yes, it was. It was a simple question that stumbled on a really advanced and difficult question. To answer that advanced question, one would still start out where you started out.
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> What have I done wrong this time?
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Initially being too sensitive to fair, constructive criticisim of your answer, that replaced one measurement with another, without explaining how the new measurement was to be carried out.

What did you do right?

Taking on board the criticism in the comments and improving the answer.