VENDOR SELECTION
Freeze criteria before the second demo.
Vendor selection fails when the second demo rewrites the criteria. Argumont keeps the buyer's Decision on the record so a polished presentation cannot silently replace it.
Typical Decision
Stay, switch, dual-run, or decline. The owner is usually procurement plus the operational lead who will live with the tool. Legal and security review contract and residual risk.
Evidence that actually matters
Implementation in your constraints, exit cost, support you have observed, and security claims that Inspector can attach to a source. A checked feature box is not proof the product works here.
How the method applies
Champion can take the leading vendor. Challenger attacks implementation and lock-in. Scout looks for current incidents and references you can verify. Judge can refuse a strong winner.
Price remains a criterion, not the only one
Price remains a criterion, not the only one. Inspector keeps brochure uptime as a claim until a source actually supports the number you are buying.
Champion and Challenger test the case, Inspector checks the evidence, and Judge records the Verdict for the Decision Owner.
Example vendor Decision
Vendor A, Vendor B, or stay. Freeze scoring before the second demo. Brochure uptime stays a claim. If the Verdict prefers B and Legal cannot accept B's terms, the Human Decision can still be A with the override written down.
Bring Argumont a Decision worth challenging.
Structure the question, test the evidence and the assumptions, and preserve what your organization ultimately decides.
Start a vendor Decision