On Thursday, January 24, 2002, at 05:20 PM, Michael Motyka wrote:
> Jim Choate <[EMAIL PROTECTED]> wrote :
>> On Thu, 24 Jan 2002, Michael Motyka wrote:
>>> Tim May <[EMAIL PROTECTED]>:
>>>> Appendix: A math puzzle. Imagine a solid sphere. Maybe the sphere is
>>>> made of plutonium. A drill bit is lowered onto the sphere, going right
>>>> through the center, centered on the center (that is, the drilled-out
>>>> core is not off-center in any way. What is left is a sphere with a
>>>> cylindrical section (and the two end caps) removed. The height of the
>>>> remaining part of the sphere is 10 centimeters. What is its volume?
>> Which volume, the sphere remnant, or the cylindrical section that ya
>> removed?
> I can only read it as that which remains after the end caps and
> cylindrical section are removed.
But you're not Jim.
>> If the sphere is 10cm in height does that mean it's sitting on the round
>> part of the sphere or the removed end caps (these two 'diameters' are
>> not equal)?
> If you want to pick nits it's not explicit about the orientation but
Isn't that kind of what Mr May is taking about? Picking at Nits, or
rather pulling at little threads (asking questions) until the whole thing
unravels?
> based on the phrase "lowered onto" I assume it was drilled out
> vertically. I also assumed that a measurement of height is a measurement
> of the thing as it would sit after being drilled and without any pitch
> or roll added.
I'm no freaking good at math, but I suspect that the volume of a
sphere with a core removed is equal to a an uncored sphere of the same
height.
Hm.
I don't have the formulas handy to figure this out, and I'm probably
wrong.
--
Crypto is about a helluva lot more than just PGP and RSA...it's about
building the I-beams and sheetrock that will allow robust structures to be
built, it's about the railroad lines and power lines that will connect the
structures, and it's about creating Galt's Gulch in cyberspace, where it
belongs.--Tim May
