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Re: [ba-ohs-talk] IBIS question

Some comments and suggestions:    (01)

>  > ...I'm not sure how to use IBIS to capture the tradeoffs
>>  and the conditions under which one would redo the decision.
>I note, too, that among related choices, one is forever doing pro's
>and con's that are the inverse of each other:    (02)

I think what you are saying is that you would like to use a 
"relationship expressing relative merit" between two Ideas according 
to some criterium.    (03)

To use your example:    (04)

>    Choice A:
>         con: Takes longest (compared to choice B & C)
>    Choice B:
>          pro: Takes least amount of time (compared to A & C)
>    Choice C:
>          ???: Takes a medium amount of time.    (05)

Instead of representing it as pros and cons, you'd like to say:
A is worse than C (according to criterium "amount of time it takes")
C is worse than B (according to criterium "amount of time it takes")    (06)

the logical next step would be to add Criterium "beauty" for example 
;-) and express:
C is worse than A (according to criterium "beauty")    (07)

I don't know how to show this graphically, but the semantics 
certainly exist and we should be able to represent them.    (08)

Come to think of it, decisionmaking often involves isolating/defining 
"value coordinates" such as "speed", "cost", "customer satisfaction" 
etc. When we do compromises, we usually try to understand relative 
merit along those "value coordinates" (e.g. arguments like "A takes 
longer than B but the customer will be much happier") and then 
tradeoff between them ("it's more important that the customer is 
happy than that it does not take long")    (09)

What if one extended IBIS by those two concepts, "value coordinate", 
and "relative merit according to value coordinate" (which is sort of 
a ternary relationship).    (010)

One might be able to show those as a table, with "value coordinates" 
being the columns, and Ideas being rows? The value of the cells being 
either numeric, or more likely, --/-/0/+/++ reflecting the 
relationships between Ideas??!?    (011)

Is that a wild thought?    (012)

Cheers,    (013)

Johannes Ernst
R-Objects Inc.    (014)