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- Date: Wed, 2 Sep 1992 00:43:00 GMT
- Sender: "Control Systems Group Network (CSGnet)" <CSG-L@UIUCVMD.BITNET>
- From: Dag Forssell <0004742580@MCIMAIL.COM>
- Subject: Kent's paper
- X-To: csg <CSG-L@vmd.cso.uiuc.edu>
- Lines: 63
-
- [From Dag Forssell (920901-2)]
-
- For Kent McClelland:
-
- Read your paper on the plane two weeks ago, Draft 7/21/92, which I picked
- up in Durango.
-
- Very nice. Really a compelling presentation. One of the best,
- comprehensive introductions to PCT we have.
-
- A few nitpicks, of course.
-
- 2.2.4.4. : I have never known wether my foot is at 60 degrees or any
- other angle. I doubt that your readers will identify with this and say:
- "of course." I would suggest that the perceptual system controls
- pressure on the pedal, plain and simple, which translates nicely into
- tendon tension. All I ever do when I drive is squeeze the accelerator,
- and let up, respectively. I do not care what the angle is, and would
- guess poorly if asked. The angle becomes a consequence of the properties
- of the environment (car design, uphill, wind resistance etc.).
-
- 2.3.2.5. : You bring in emotions and I don't understand "invites negative
- emotions." I do not know what insight of Rick's you refer to. If you
- want to deal with emotions, I would think a summary of Ed Ford's
- presentation in Freedom from Stress would be more appropriate and easier
- to relate to. This could be its own section. LCS II has the missing (from
- BCP) chapter on feelings.
-
- Between Rick and Bill and all, there is much talk about loop gain. But
- you are not using equations with constants all over the place.
- Considering your audience, you could choose to not mention it,
- deemphasize it or use / substitute more illustrations.
-
- Personally, I find it intuitively easier to talk about how a control
- system directs energy and or resources to influence the variable.
-
- The nerve signal gives instructions to the muscle fiber, which contracts,
- using the energy / resource of sugar to create an effect far stronger
- than the energy content of the signal itself. (This is amplification).
- What size biceps?
-
- Your cruise control presses the gas pedal, which provides more fuel to
- the engine. What size engine? (This is strength).
-
- When you talk about conflict, you can talk about two control systems of
- equal or different resources, strength, evoking the image of armwrestling
- or such and make the same points about fatigue, reorganization, lack of
- satisfaction.
-
- 3.2.8. : There [are] some ..
-
- 5.2. : ... To put it bluntly[: I]f...
-
- This is a marvelous paper. What are your plans for it? Surely it deserves
- publication in a highly visible place.
-
- Dag Forssell
- 23903 Via Flamenco
- Valencia, Ca 91355-2808
- Phone (805) 254-1195 Fax (805) 254-7956
- Internet: 0004742580@MCIMAIL.COM
-
- PS Kent, please acknowledge. Believe you are on net. If not, I will mail.
-