Computer Instructions

Path: athena.cs.uga.edu!emory!sol.ctr.columbia.edu!spool.mu.edu!uwm.edu!rutgers!modus!otello!gear!am!alex
From: alex@am.sublink.org (Alex Martelli)
Newsgroups: comp.unix.admin,sublink.rec.funny
Subject: Re: Floppy Disk Labels
Message-ID: [1992Oct05.171416.28431@am.sublink.org]
Date: 5 Oct 92 17:14:16 GMT
References: [1992Sep24.224056.3652@kopachuk.uucp] [141.18318@incc.com] [1992Sep26.182821.21658@ceilidh.beartrack.com] [1405@pacsoft.com] [49719@sunquest.UUCP]
Organization: Premiata Famiglia Martelli & Figli
Lines: 36

ahd@apollo.sunquest.com (Arthur H. Dyer) writes:
	...
:]But the authors assured him he had nothing to be embarassed about.  After all,
:]the document was intended for novices, and they were grateful for being taught
:]that you should assume _nothing_ when dealing with beginners.

:]Hmm.  Maybe this thread really belongs in comp.human-factors?  :-)

Maybe!  But meanwhile I can't resist any more relating a similar
problem which really occurred to me a few years back... I had set
up an image acquisition station for a research laboratory; one
mounted a write-enabled tape spool in a dedicated tape drive, the
image to be digitized in the microdensitometer, and had to type a
few commands at the console of the dedicated mini driving it all,
to give a few parameters of the digitizing operation.  I wrote what
I believed were VERY clear instructions on how to operate the thing
(otherwise I would be sure to be called in every time), and tested
them first on a secretary.  She immediately showed me the first
problem with the way my instructions were worded: "Mount the tape
spool in the drive", she read, and she did so, but then the
instructions continued, "after removing the ring" -- alas, once
the tape spool was mounted, the write-protection ring was not
accessible any more (by design of those tape-spool units), so she
had to unmount the spool!  My fault of course, so I rephrased:
"After removing the ring, mount the tape spool in the drive", and
re-tested, this time with a fairly senior computer scientist of the
lab as my guinea pig.  "After removing the ring", he read, and,
with a slightly perplexed expression to his face, proceeded to
remove his wedding ring from his finger (thinking perhaps of some
static-discharge risk?-) before continuing to read...

You can bet that ALL operating instructions I have written since
then have been HEAVILY laced with redundancy and warnings not to
proceed until all the steps have been read through!
-- 
Alex Martelli - alex@am.sublink.org - +39 (51) 250434 - Bologna, Italia


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