I didn't realize my question implied that. [...]
You're obviously reading things into messages that are not there.
I don't know why some people insist on doing that.

That explains a lot. You are too helpful on the group to be consistant
with a rude personality, but your posts sometimes come off that way. I
suspect it may be because you tend to post the minimum information
possible that responds to a point, and that point is often taken out of
context, so what you post may be true, but frustratingly just miss the
mark as far as the discussion goes. (The sky is blue. No, it's cloudy.
No, it's blue.) (one talking about light scattering, the other talking
about the weather conditions)

I thought Ron's statement,
"although there's almost always a class D tower in the middle of a TRSA",
suggested he knew of at least one TRSA that did not have Class D airspace
at it's center.

I take "almost always" as implying that he =doesn't= know that there is
none (although it is consistant with his knowing that there is at least
one).

How would I phrase an interrogative to clarify that without
implying there isn't any TRSA without Class D airspace, and more to the
point, that Ron should know this, Steven does, nyah nyah nyah?

You could prepend "Just curious..." for example. That implies that you
don't know and would like to.

Gee, I thought it was pretty neutral. It's a pretty simple yes or no
question. [...]
You're obviously reading things into messages that are not there.
I don't know why some people insist on doing that.

Yes, you are right. It is neutral at face value. However, questions in
a thread are in a context, and when a thread becomes nitpicky, it tends
to take on a slightly combative feel. (I'm right - no you're wrong -
yes I'm right...) and that influences whether a question is then
interpreted at face value.

I've learned a lot from your posts, often when you are slicing hairs.
But supplying a bit more background information (as you sometimes do) or
context (as it sometimes changes in a discussion) will make it clearer
which hair you are slicing, and confusion over which hair is under the
chopper can lead to more acrimony than clarity.

Thanks for asking, I hope this is helpful.

Jose
--
"Never trust anything that can think for itself, if you can't see where
it keeps its brain."
(chapter 10 of book 3 - Harry Potter).
for Email, make the obvious change in the address.