In rec.aviation.piloting Le Chaud Lapin wrote:

I was merely pointing out that, if a product is made, before anyone
knows what it is, they will still buy it if they like it, which
obviously can only occur after it has been made and made public.

If it is trivially cheap compared to income.

And it took years for microwave ovens to become commodity items as
opposed to a toy for the well off.

Part of the problem with PAV is not that people do not want it, but no
one has made anything practical yet.

If someone were to make a PAV that satisfied the criteria outlined by
NASA/CAFE/PAV, there would be tremenous consumer response.

Yeah, the overwhelming sound of "It costs WHAT!!!" and "Are you out
of your mind?".

--
Jim Pennino

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