Holy cow, I wrote a book!
It's not infrequent that I see somebody ask a question
that can be answered in only one way.
But if that's not the answer, then nobody will respond.
Is there a module that does XYZ?
This question can be answered in only one way:
"Yes, here it is."
If nobody has written such a module,
nobody is going to reply saying,
"No, nobody has written the module you request,"
because that would require the responder to prove a negative.
"I have scoured the entire planet, including code sitting
on a hard drive in somebody's mother's basement,
and have verified that there is no module that does XYZ.
Furthermore, I have altered the rules of the universe to
ensure that nobody will write such a module in the time
between I completed this investigation and the time you
receive this message."
If you ask a question asking whether something exists,
there's only one possible response,
because nobody is going to say that the code you request
has never been written.
So far, nothing is wrong.
Perhaps the person who asked the question was
about to write an XYZ module,
but wanted to make sure the effort was not being duplicated.
However, there are some people who fail to realize that
they just asked for proof of a negative, and send a follow-up:
Can somebody please tell me whether this module exists?
What's particularly scary are the people who ask the question
in such a way that they are not only asking for proof of a negative,
but in fact proof of a perpetual negative.
There was one customer who was rather insistent upon receiving
an answer to a question of the form
"Will there ever be a tool that will...?"
And once again, the round-up of unhelpful or rude
subject lines I've seen in the past five months: