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Subject: Re: Python handles globals badly.
From: William Ray Wing <wrw@mac.com>
In-reply-to: <d3428ad15paph0curp8qt98151ibo2samh@4ax.com>
Date: Thu, 04 Dec 2014 23:17:03 -0500
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To: Dennis Lee Bieber <wlfraed@ix.netcom.com>, python-list@python.org
Cc: "William R. Wing" <wrw@mac.com>
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> On Dec 4, 2014, at 8:56 PM, Dennis Lee Bieber <wlfraed@ix.netcom.com> =
wrote:
>=20
> On Thu, 04 Dec 2014 14:51:14 +0200, Marko Rauhamaa <marko@pacujo.net>
> declaimed the following:
>=20
>> Chris Angelico <rosuav@gmail.com>:
>>=20
>>> A lot of programs don't use threads, and therefore cannot have =
thread
>>> safety problems - or, looking at it the other way, do not care about
>>> thread safetiness. It's like having Neil Armstrong wear water wings =
to
>>> make sure he won't drown in the Sea of Tranquility.
>>=20
>> The water wings would be too unwieldy since they'd have to be six =
times
>> as large on the moon. It's all about risk/benefit analysis.
>=20
> 	Actually, since the pull of gravity is 1/6th that of earth, but =
the
> density of the "water" is the Sea is the same, the water wings should =
be
> smaller to provide the same degree of lift.
>=20
> 	Of course, the lack of atmospheric pressure is going to result =
in the
> water wings expanding, perhaps to the bursting point...
> --=20
> 	Wulfraed                 Dennis Lee Bieber         AF6VN
>    wlfraed@ix.netcom.com    HTTP://wlfraed.home.netcom.com/
>=20
> --=20
> https://mail.python.org/mailman/listinfo/python-list

Wrong, again I=E2=80=99m afraid.  Assume for a moment you are under a =
dome pressurized to one standard atmosphere in some future moon colony =
and are in a swimming pool.  Both you AND the water are under 1/6th as =
much gravitational pull.  Neither your density nor the water=E2=80=99s =
density has changed. Density is a function of the atomic weight of the =
elements making up both you and the water and the inter-atomic/molecular =
spacing of those elements.  Neither has changed.  Therefore the volume =
of buoyant material (in the case of water wings, air) necessary to keep =
you above water is the same on earth as it would be on the moon. =20

-Bill=