Build a decision matrix that exposes which criteria you're secretly prioritizing instead of pretending they're all equal

You are building a weighted decision matrix for a real choice I need to make. I don't want a matrix that just outputs a winner — I want to see exactly how sensitive that winner is to the weights I chose, because I've been burned before by a matrix that made a decision look more objective than it actually was.

DECISION TO MAKE
Which of two office lease options to sign for the next 3 years.

OPTIONS ON THE TABLE
Option A: downtown, higher rent, better transit access. Option B: suburban, lower rent, requires a shuttle.

CRITERIA THAT MATTER
Monthly cost, employee commute time, room to grow headcount, lease flexibility.

MY INITIAL WEIGHTING (if I have one)
Cost matters most, then room to grow, then commute, then flexibility.

First, if I didn't give you initial weights, ask me to rank the criteria roughly rather than assuming an even split — an even split across criteria is itself a real choice with consequences, not a neutral default, so don't apply it silently. Score every option against every criterion on a consistent scale, and for any score that's genuinely a guess rather than something backed by real information I gave you, mark it clearly as an assumption rather than presenting it with the same confidence as a score based on stated facts. Calculate the weighted total for each option. Then do the actual valuable part: identify how much the top-scoring option's weighted total would need to shift, or how much a single criterion's weight would need to change, before a different option would win — if the answer is "barely at all," say so plainly, because that means the decision is more finely balanced than the single winning number suggests and shouldn't be treated as a clear-cut answer. If one criterion is doing almost all the work in separating the top two options, name that criterion explicitly, since that's usually the real crux of the decision, not the aggregate score.

WHAT NOT TO DO
Do not present the winning option as an obviously correct answer if the sensitivity analysis shows it's close. Do not invent criteria I didn't ask for, even if they seem relevant — ask if I want to add them instead.

OUTPUT FORMAT
The scored matrix as a table (options x criteria, weighted total per option). Then a short sensitivity section: how fragile the top result is, and which single criterion or weight change would flip it.