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If A affect B, can B affect A?
Posted: Wed Nov 10, 2021 1:22 pm
by Christine
A and B are both varibales. I have a problem that if A affects B, can B affect A? I mean that the first A will affect the first B, but the first B will affect the second A. Is it workable?
thanks!
Re: If A affect B, can B affect A?
Posted: Wed Nov 10, 2021 1:37 pm
by Administrator
Have you done any of the Vensim tutorials yet?
Try here,
http://www.public.asu.edu/~kirkwood/sysdyn/SDRes.htm
On this page you will find a really good Vensim PLE tutorial. This shows you how to create a stock and flow where they influence each other.
Re: If A affect B, can B affect A?
Posted: Wed Nov 10, 2021 1:46 pm
by Christine
Thanks, I find that my vensim version is DSS, is this tutorial still useable for it?
Re: If A affect B, can B affect A?
Posted: Wed Nov 10, 2021 1:57 pm
by tomfid
Yes - DSS just has extra capabilities.
Re: If A affect B, can B affect A?
Posted: Wed Nov 10, 2021 1:57 pm
by Administrator
You've registered on the forum as a PLE user, please update your profile with your licence serial number.
Re: If A affect B, can B affect A?
Posted: Wed Nov 10, 2021 2:01 pm
by tomfid
If A -> B -> A, you have a feedback loop, which is fine (kind of the point really). However, this does imply that there must be at least one stock somewhere in the A-B chain.