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John,
Interesting analogies
I think the scenario one the analogy is not quite right as they may just not like either choice - doesn't mean they go hungry. But anyway how would you model the attributes in the second status quo example you describe.
Thanks, Mike

Hi

Here is our current design

Design
;alts = alt1*, alt2*, OptOut
;rows = 36
;block = 3
;eff = (mnl,d)
;alg = swap(stop=noimprov(120 secs))
?;cond:
?if(alt1.maturation = 3 or alt1.maturation = 4, alt1.Yield <> 40),
?if(alt2.maturation = 3 or alt2.maturation = 4, alt2.Yield <> 40)

;model:
U(alt1 ...

Luck or strange? no explanation otherwise? just want to be sure there is no explanation.

In our model below when we run it, the Attribute 'Seedlings' does not give choice of '10 or 20' in any scenario. There are '0 and 10' and '10 and 10' and '0 and 20' etc but no 10 and 20. We have tried with a number of designs with different priors etc and the same. Can you explain why?

Design
;alts ...

Running designs take forever, even simple ones from documentation don't stop.