> -----Original Message-----
> From: olympus-owner@xxxxxxxxxx [mailto:olympus-owner@xxxxxxxxxx] On
> Behalf Of Moose
> Sent: Monday, May 21, 2007 10:02 PM
> To: olympus@xxxxxxxxxx
> Subject: [OM] Re: [OT] Aged computer (and computer user) stuff, was:
> Anybody using Olympus Viewer or Studio with Vista?
>
> Chuck Norcutt wrote:
> > You surely know how to dredge up the past.
> LOL!
>
> When I thought of that old study, I felt somehow that you would have
> been involved, but I said nothing. After all, IBM had a gazillion
> employees. But my hunch was right. Cool!
> > I spent many months working on that study and used the results
> internal to IBM to justify a third CPU for my time sharing complex. I
> got involved at the dawn of satellite links which were a baddie no one
> wanted to know about. Approximately 3/4 second signal propagation delay
> which, by itself, was enough to cause noticeable attention loss for
> interactive users.
> >
> I remember little more than the catch phrase 'sub second response
> time'.
> I do remember that it led to building a data line of some sort by
> trenching across the street between the hardware center blockhouse and
> the building where the programmers and such worked.
>
> As one who has spent uncounted hours interacting with terminals and
> computers*, it really does make a difference. You can get into a
> 'groove' where stuff just flows rapidly. Soooo different than punch
> cards. :-)
>
> Memory Moose
>
> * Including your PC3270s
>
Considerable experience here with this and all the studies of the time. The
magic response time was 2 seconds, as I recall. In fact, if you
consistently provided sub-2 second response time, you set an artificial
expectation that couldn't be consistently met and then you had the same
productivity problems if it went above that new threshold, even if it was
under 1/2 second. Most of the online tools at the time (TSO, CICS, etc.)
had the ability to force a minimum response time (almost universally set at
2 seconds) so you didn't train the user's expectations incorrectly.
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