"Bob Noel" wrote in message
...
He also asked how many people use flight planning software. Negative
responses provide information to that part of the request.

No they don't.

That's like saying "how many apples are in that bowl", and thinking that
being told how many apples aren't in that bowl somehow answers the question.

Unless you have a 100% response rate from all pilots AND know exactly how
many pilots you're talking about, negative answers do nothing to answer the
question.

Pete