Today's Message Index:
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1. 12:33 PM - JUST MY POINT (Fergus Kyle)
2. 04:21 PM - Re: JUST MY POINT (Noel Loveys)
3. 06:08 PM - Re: JUST MY POINT (Randy L. Thwing)
4. 07:43 PM - Re: JUST MY POINT (Fiveonepw@aol.com)
5. 07:46 PM - Re: JUST MY POINT (Fiveonepw@aol.com)
Message 1
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Hello,
The recent spate of calculations and replies, regarding the simplest
of arithmetic seems to have escaped the purpose of my original statement -
that the simpler the calc, the more times you do it to confirm.
Simple sums involve rather more mental assumptions as a way to to
achieve the end. It's theses assumptions that often obscure the accuracy.
Whether brackets are mandatory or optional is of no consequence to my
proiposal.
Take Centigrade (Celsius) double it, subtract ten percent and add
32, Then do it again. Or do it another way: take ninety percent of double
Celsius and add 32. Watch out for minusses though: -40C; -80C; -80C-(-8) is
-72; -72+32; -40F
The extra security is acquiring the same answer
twice................
Ferg
Message 2
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How things change!
When I was in school, about ten million years ago, We were told the answer
wasn't important but how we got it was. As a result only about 5% of the
answer on any math problem was attributed to actually getting the right
answer.
Now days, no one, especially myself, gives a fiddlers d#$% about how the
correct answer is achieved, only that it is the correct answer.
For most problems though a calculation is good enough for government work.
I don't think any one really cares if a mile is 1.61 kilometres or one
nautical mile is 1.15 mi ( I had to get out the old whiz wheel to check that
one). Its easy to do a one and two-thirds or a 1.1X calculation, pardon the
expression, on the fly.
That's my story and I'm sticking to it....... Unless suitably bribed of
course.
Noel
> -----Original Message-----
> From: owner-engines-list-server@matronics.com
> [mailto:owner-engines-list-server@matronics.com] On Behalf Of
> Fergus Kyle
> Sent: Wednesday, June 27, 2007 5:02 PM
> To: engines
> Subject: Engines-List: JUST MY POINT
>
>
>
> Hello,
> The recent spate of calculations and replies, regarding
> the simplest
> of arithmetic seems to have escaped the purpose of my
> original statement -
> that the simpler the calc, the more times you do it to confirm.
> Simple sums involve rather more mental assumptions as a
> way to to
> achieve the end. It's theses assumptions that often obscure
> the accuracy.
> Whether brackets are mandatory or optional is of no consequence to my
> proiposal.
> Take Centigrade (Celsius) double it, subtract ten
> percent and add
> 32, Then do it again. Or do it another way: take ninety
> percent of double
> Celsius and add 32. Watch out for minusses though: -40C;
> -80C; -80C-(-8) is
> -72; -72+32; -40F
> The extra security is acquiring the same answer
> twice................
> Ferg
>
>
>
>
>
>
>
Message 3
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| Subject: | Re: JUST MY POINT |
I'm stunned at the language some of you listers use, please use civil &
correct language. The correct term on a aviation list is:
"A flying fiddlers d#$%"
Please watch this in the future,
Best Regards,
Randy, Las Vegas DO NOT ARCHIVE
Engines-List message posted by: "Noel Loveys" <noelloveys@yahoo.ca>
>
> How things change!
>
> Now days, no one, especially myself, gives a fiddlers d#$% about how the
> Noel
Message 4
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| Subject: | Re: JUST MY POINT |
In a message dated 6/27/2007 6:22:32 PM Central Daylight Time,
noelloveys@yahoo.ca writes:
How things change!
>>>
Wow! All this cipherin!- I just keep a 4x5" laminated card in the glovebox
in my plane with columns of C-F conversions on one side and mph/kts on the
other- made 'er m'self on Excel. MUCH easier for the math-challenged and
guaranteed correct!
Mark do not archive
************************************** See what's free at http://www.aol.com.
Message 5
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| Subject: | Re: JUST MY POINT |
In a message dated 6/27/2007 8:09:14 PM Central Daylight Time,
n4546v@mindspring.com writes:
The correct term on a aviation list is:
"a" aviation list?! ....... "_A_" aviation list??!!! I s'pose'n ya ment
"this here" aviation list, dintcha?
Mark do not archive
************************************** See what's free at http://www.aol.com.
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