Measures where the names have other meanings are unhelpful. So "1 cup" 
might be meaningful to a USAn (or someone like me who bought measuring 
spoons/cups in the USA) but it's thoroughly ambiguous.

I notice that USAns don't talk about "stone" (14lbs) so there's only so 
far the non-decimal usefulness goes. :-) Probably they don't talk about 
"hundredweight" or "groats" or "florins" either. :-)

Cheers, Martin

Martin Packer

zChampion, Systems Investigator & Performance Troubleshooter, IBM

+44-7802-245-584

email: martin_pac...@uk.ibm.com

Twitter / Facebook IDs: MartinPacker

Blog: https://mainframeperformancetopics.com

Podcast Series (With Marna Walle): https://developer.ibm.com/tv/mpt/    or 
  
https://itunes.apple.com/gb/podcast/mainframe-performance-topics/id1127943573?mt=2


Youtube channel: https://www.youtube.com/channel/UCu_65HaYgksbF6Q8SQ4oOvA



From:   "Pew, Curtis G" <curtis....@austin.utexas.edu>
To:     IBM-MAIN@LISTSERV.UA.EDU
Date:   21/07/2020 14:46
Subject:        [EXTERNAL] Re: OOBOL and English was Re: Still COBOL After 
All These Years?
Sent by:        IBM Mainframe Discussion List <IBM-MAIN@LISTSERV.UA.EDU>



On Jul 20, 2020, at 10:22 PM, Jackson, Rob <rwjack...@firsthorizon.com> 
wrote:
> 
> American standard--Imperial units; they're rubbish.  Abject garbage.  SI 
is not a fad, despite its origins.  No fan of the "French;" no fan of 
"Trump;" no fan of anything political.  But SI, revised a couple times or 
three, is a beautiful system of units in which one may compute physics. If 
you disagree, then I assert you have a challenge understanding many things 
about physics.  I'm talking about mechanics and fluid dynamics.  I'm too 
stupid for E&M, although the same equivalency attempts apply there.

For science and engineering I totally agree: you should never use anything 
but SI units. They have precise definitions, and being decimal-based make 
calculations easier. Not to mention being used world-wide.

For everyday life, though, I think American/Imperial units (and any other 
traditional systems that may survive elsewhere) have their advantages. 
They evolved because people found them useful. For example, when I’m 
cooking I could say 250 milliliters or one cup (they’re close enough for 
the precision I need) but one cup is simpler. Or if my pedometer says I’ve 
walked 2000 steps I know I’ve gone about a mile. (“Mile” comes from “mille 
passuum” = “a thousand of steps”; my pedometer counts left and right as 
separate steps but for the Romans you had to move both before they counted 
it.)


> 
> P.S.  Apparently Imperial units have been redefined as relative to SI. 
Imagine that. 

Yep. For precision definitions, always use SI.

I think it’s cool that SI units are now defined by specifying exact values 
for physical constants.


> 
> P.P.S.  This reminds me of many conversations with my father.  He 
absolutely couldn't stand this type of thing, i.e. SI being obviously 
superior.  I don't get it.  It is what it is.
> 
> As a disclaimer, I'm not a complete bigot.  I say miles and yards; but I 
have this nasty habit of converting them to meters in my mind every time I 
say them.  The one thing I cannot get used to in every-day life is Celsius 
degrees.  I think in Fahrenheit degrees. Oddly enough, since they're 
exactly the same thing, I find it easier to talk in Kelvins rather than 
Celsius degrees.  Maybe I just like starting at zero.  :)  I couldn't tell 
you what absolute zero in Fahrenheit is; I guess I never cared.

This supports my point about the convenience of traditional units. 
Fahrenheit is more granular than Celsius, so you can be a bit more precise 
without having to go to decimals.


-- 
Pew, Curtis G
curtis....@austin.utexas.edu






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