What is the best decision model?
There is no universal best model. Use the simplest framework that represents the important structure of the question.
Does the highest score always win?
No. Constraints, unacceptable risks, data quality and judgment may justify another option. Record the reason.
Should matrix weights total 100 percent?
It is convenient and easier to review, although any consistent relative scale can work.
How are scenarios different from sensitivity analysis?
Sensitivity analysis often changes one input at a time. Scenario analysis changes related assumptions together to represent a coherent future.
Are calculator entries private?
Calculators run in the browser. The decision brief uses local browser storage only after Save is selected.
Can the tools replace professional advice?
No. They support education and preliminary comparison. High-stakes and regulated decisions require qualified advice.
What if two options are nearly tied?
Treat the decision as close. Test assumptions, seek information that could change the ranking and consider downside and reversibility.
When should a decision be reviewed?
Review when an agreed trigger occurs, a major assumption changes or a proportionate review date arrives.