#1892 Cannot recover from mistakenly adding a loop definition

[High Performance Coder]

Open a Godely table and add x as a stock variable, with initial condition x. This creates a definitional loop. There's no way of getting out of this, other than saving the model and reloading - setting the initial condition to empty or something else does not clear the condition.

[Steve Keen]

This is related to the other bug, when a logic error in defining flows--one that generates A-L-E not equal to 0--pops up in other tables if you delete it in one. A "delete from all tables" command might help in both cases.

[High Performance Coder]

I don't believe it is releated. This has to do with initial conditions
being defined in terms of the variable.

What you're talking about stems from a misunderstanding of signs
between assets and liabilities, I believe.

On Thu, Oct 30, 2025 at 06:16:15AM -0000, Steve Keen wrote:

This is related to the other bug, when a logic error in defining flows--one
that generates A-L-E not equal to 0--pops up in other tables if you delete it
in one. A "delete from all tables" command might help in both cases.

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[tickets:#1892] Cannot recover from mistakenly adding a loop definition

Status: open
Milestone: Backlog
Created: Wed Oct 29, 2025 10:00 PM UTC by High Performance Coder
Last Updated: Wed Oct 29, 2025 10:00 PM UTC
Owner: nobody

Open a Godely table and add x as a stock variable, with initial condition x.
This creates a definitional loop. There's no way of getting out of this, other
than saving the model and reloading - setting the initial condition to empty or
something else does not clear the condition.

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Dr Russell Standish Phone 0425 253119 (mobile)
Principal, High Performance Coders hpcoder@hpcoders.com.au
http://www.hpcoders.com.au

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[Steve Keen]

True, but once that mistake is made, it should be possible to eliminate it within Ravel. Currently, it's not. Like the 3 Stooges rolling out a carpet, if you eliminate the erroneous row from one table, it reappears in another. The only way out at present is to identify the error and then eliminate the relevant text in the MKY file using a text editor.

[High Performance Coder]

You've reported this at https://sourceforge.net/p/minsky/tickets/1794/ and https://sourceforge.net/p/minsky/tickets/1787/ and maybe other places. This ticket is about something else entirely.

In all the examples you sent of the "3 stooges problem", correcting the miscreant line fixed the problem - I never needed to edit the .mky file directly, nor even save and reload (a somewhat less egregious sin). So I'm at a loss as to what needs to be done.

[Steve Keen]

OK. I'll have to show the dilemma I experienced, once I stuff up enough to
create it again.

On Thu, Oct 30, 2025 at 11:03 PM High Performance Coder hpcoder@users.sourceforge.net wrote:

You've reported this at https://sourceforge.net/p/minsky/tickets/1794/
and https://sourceforge.net/p/minsky/tickets/1787/ and maybe other
places. This ticket is about something else entirely.

In all the examples you sent of the "3 stooges problem", correcting the
miscreant line fixed the problem - I never needed to edit the .mky file
directly, nor even save and reload (a somewhat less egregious sin). So I'm
at a loss as to what needs to be done.

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[tickets:#1892] https://sourceforge.net/p/minsky/tickets/1892/ Cannot
recover from mistakenly adding a loop definition

Status: open
Milestone: Backlog
Created: Wed Oct 29, 2025 10:00 PM UTC by High Performance Coder
Last Updated: Thu Oct 30, 2025 09:53 AM UTC
Owner: nobody

Open a Godely table and add x as a stock variable, with initial condition
x. This creates a definitional loop. There's no way of getting out of this,
other than saving the model and reloading - setting the initial condition
to empty or something else does not clear the condition.

---

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https://sourceforge.net/p/minsky/tickets/1892/

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