Search found 6 matches

by ""Jay Forrest"" <systems@jayf
Tue Dec 09, 2008 7:45 am
Forum: SD Mailing List Archive
Topic: ANNOUNCE PCT and an economic emergency
Replies: 9
Views: 16950

ANNOUNCE PCT and an economic emergency

Posted by ""Jay Forrest"" <systems@jayforrest.com> Hi Tom! A couple of perverse thoughts. Your email - as always struck great chords. You said. ""The real problem is not Fed policy or FNMA, it's that people got excited about rising asset prices and forgot to think about...
by ""Jay Forrest"" <systems@jayf
Sun May 11, 2008 7:13 am
Forum: SD Mailing List Archive
Topic: QUERY Models, Problems and Systems
Replies: 29
Views: 97121

QUERY Models, Problems and Systems

Posted by ""Jay Forrest"" <systems@jayforrest.com> Hi Jack! That was beautifully written and well said! Bravo! I have no qualms with the modeling of systems. My experiences working with clients with Barry Richmond led me to deeply appreciate the insights available from simple, pe...
by ""Jay Forrest"" <systems@jayf
Fri May 09, 2008 7:53 am
Forum: SD Mailing List Archive
Topic: QUERY Models, Problems and Systems
Replies: 29
Views: 97121

QUERY Models, Problems and Systems

Posted by ""Jay Forrest"" <systems@jayforrest.com> Thanks for bringing this up, Kim! I sympathize with your question for though the nature of system dynamics includes consideration of boundaries, there is a certain tension between the concepts of modeling the problem and modeling...
by ""Jay Forrest"" <systems@jayf
Mon Apr 28, 2008 7:08 am
Forum: SD Mailing List Archive
Topic: QUERY Meaning of Stock/Level
Replies: 46
Views: 38570

QUERY Meaning of Stock/Level

Posted by ""Jay Forrest"" <systems@jayforrest.com> Hi Kim! While I am not a physicist, I am a chemical engineer which requires a significant level of thermodynamics so I feel at least partially qualified to address your comments. The concept of temperature relates to an intensive...
by ""Jay Forrest"" <systems@jayf
Sat Apr 26, 2008 6:32 am
Forum: SD Mailing List Archive
Topic: QUERY Meaning of Stock/Level
Replies: 46
Views: 38570

QUERY Meaning of Stock/Level

Posted by ""Jay Forrest"" <systems@jayforrest.com> Good email, Tom. I was behind and just got to Jack's email. The temperature example is great - and a lot like the ""trust"" model in that temperature is a somewhat arbitrary indicator/measure rather than an co...
by ""Jay Forrest"" <systems@jayf
Wed Apr 16, 2008 6:42 am
Forum: SD Mailing List Archive
Topic: QUERY Meaning of Stock/Level
Replies: 46
Views: 38570

QUERY Meaning of Stock/Level

Posted by ""Jay Forrest"" <systems@jayforrest.com> While following this thread I struggled with the feeling that there was a difference between models that use soft variables to support exploration of relatively concrete issues and topics and models that are specifically concerne...