[From Dick Robertson,2003.08.12.1640CDT]
Bill Powers wrote:
[From Bill Powers (2003.08.11.0815 MDT)]
Rick Marken (2003.08.11.1830)--
Just to update those interested:
A month or two ago, John Flach of Wright State College wrote a joint paper
with Rick and me on a PCT model of pursuit tracking. The conclusion of the
paper was that long-established ideas about adaptation of human control
systems were upset by finding that a control system could control under
highly variable conditions -- without any change in its internal
characteristics. The appearance of adaptation under different load
conditions proved to be an illusion.
John felt this was a highly significant finding. Rick and I both admired him
for coming to this view, as he was the co-author of a book, just published,
in which adaptation was featured in at least one major chapter (chapter 14,
for those who have the book, "Control theory for humans" by Jagacinski and
Flach)..
A quick comment from the "soft science" side of CSG. Yessir, if I understood
your comment correctly, John Flach would seem to be one of those incredibly
rare and precious individuals who, with a large stake in some status quo, has
the bigness of mind to averre that he might have had a wrong idea.
Such a person should not go uncelebrated.
Best, Dick R
[From Rick Marken (2003.08.14.1145)]
Jeff Vancouver, (2003.08.14.1258 EST)
Can I get a copy of that ["Adaptation Illusion" - rsm] paper from one of you?
I think the paper is going to take some more time. One of the authors is still
reorganizing. As soon as we have a final version I'll send out copies to those
who want them, if all the authors agree.
Best
Rick
···
---
Richard S. Marken, Ph.D.
Senior Behavioral Scientist
The RAND Corporation
PO Box 2138
1700 Main Street
Santa Monica, CA 90407-2138
Tel: 310-393-0411 x7971
Fax: 310-451-7018
E-mail: rmarken@rand.org
[from Jeff Vancouver, (2003.08.14.1258 EST)]
Can I get a copy of that paper from one of you?
Jeff
···
-----Original Message-----
From: Control Systems Group Network (CSGnet)
[mailto:CSGNET@LISTSERV.UIUC.EDU] On Behalf Of Richard Robertson
Sent: Tuesday, August 12, 2003 4:40 PM
To: CSGNET@LISTSERV.UIUC.EDU
Subject: Re: John Flach
[From Dick Robertson,2003.08.12.1640CDT]
Bill Powers wrote:
[From Bill Powers (2003.08.11.0815 MDT)]
Rick Marken (2003.08.11.1830)--
Just to update those interested:
A month or two ago, John Flach of Wright State College wrote a joint
paper
with Rick and me on a PCT model of pursuit tracking. The conclusion of
the
paper was that long-established ideas about adaptation of human
control
systems were upset by finding that a control system could control
under
highly variable conditions -- without any change in its internal
characteristics. The appearance of adaptation under different load
conditions proved to be an illusion.
John felt this was a highly significant finding. Rick and I both
admired him
for coming to this view, as he was the co-author of a book, just
published,
in which adaptation was featured in at least one major chapter
(chapter 14,
for those who have the book, "Control theory for humans" by Jagacinski
and
Flach)..
A quick comment from the "soft science" side of CSG. Yessir, if I
understood
your comment correctly, John Flach would seem to be one of those
incredibly
rare and precious individuals who, with a large stake in some status
quo, has
the bigness of mind to averre that he might have had a wrong idea.
Such a person should not go uncelebrated.
Best, Dick R