Re: Questions - Higer Order Functions

+ Kent M Pitman <pitman@xxxxxxxxxxx>:

Didier Verna <didier@xxxxxxxxxxxxx> writes:

Kent M Pitman <pitman@xxxxxxxxxxx> wrote:

Is a higher order question:
a) a question that can take as a parameter another question
b) a question that returns a question
c) both?
2. In practice, are questions that return questions used frequently?

I believe the most important aspect of higher order questions is
lambda-questions: anonymous questions that stand for themselves...

Perhaps these are related to the famous "why?" operators I've heard so
much about.

That is used if you wish to ask a question that asks a question about
itself, I think. The pertinent fact is surely the equation

question why? question == why? question

--
* Harald Hanche-Olsen <URL:http://www.math.ntnu.no/~hanche/>
- It is undesirable to believe a proposition
when there is no ground whatsoever for supposing it is true.
-- Bertrand Russell
.