Proposals shown to follow from principles, precedents, or commitments the other side has already stated are hard to refuse, since refusing means contradicting their own position in front of others.
An example
Any project paying back inside eighteen months should be funded without debate: the chief financial officer of a regional newspaper and radio group had said so at every leadership meeting for a year. The head of product for the group's digital subscriptions had a paywall redesign he disliked as an expense. Her proposal opened with his rule, quoted from the minutes of the March meeting, and then showed the payback, fourteen months, using his team's subscriber forecast and his team's cost of capital. She sent it to him a week before the meeting and asked whether she had applied the rule correctly. He found one error in the cost line, which moved payback to fifteen months. At the meeting he said the project met the standard and should go ahead.
Why it works
People want to act consistently with positions they have taken, especially in public. A proposal shown to follow from the other side's own stated principle, precedent, or rule looks better on their terms, and rejecting it becomes costlier because it means contradicting themselves in front of others. The stronger and more public the earlier commitment, the higher that cost. It depends on quoting the standard accurately, applying it honestly, and letting its owner check the application.
The thinking behind it
G. Richard Shell Bargaining for Advantage: Negotiation Strategies for Reasonable People (1999) treats the ability to apply general norms, or the other side's own standards, to advance a position as a normative source of bargaining power. It is strongest when the standard is one the other party regards as legitimate and relevant, because people want to appear consistent with their own stated principles. A payback rule a finance chief has repeated for a year is about as strong a standard as there is.
Robert B. Cialdini Influence (1984) describes commitment and consistency: once people have taken a position, especially a public or written one, they feel pressure to act in line with it. A rule stated at leadership meetings and recorded in the minutes is that kind of commitment. Refusing a proposal that meets it means acting against one's own public position, which is costly in front of colleagues.
When it fits
Proposals going to someone who has stated a principle, rule, or precedent the proposal genuinely meets are the fit: a payback rule, a value statement, an earlier decision on a similar case. You need the record of what they said, a proposal that truly fits it, and a relationship that can bear their seeing exactly what you are doing.
How to use it well
Find what the decision-maker has said or decided before: a stated rule, a precedent, a published value, a past approval in a similar case.
- Quote it exactly, with the date and the forum.
- Show, step by step, how the proposal meets it, using their own data where you can.
- Send it to them first and ask whether you have applied their standard correctly.
- Accept their corrections.
At the meeting, let the logic carry it. Pointing out an inconsistency in public makes people defensive; asking them to apply their own rule lets them agree with themselves.
What it costs and where it backfires
Done clumsily, it looks like a trap, and people resent being boxed in by their own words. They may simply change the standard. Each use spends some goodwill, so keep it for proposals that truly fit. Quoting out of context, or stretching the standard to cover what it never meant, misrepresents them, and they will remember.
When it is used on you
Verify the quote and the application when someone holds you to your own words. If they are right, the honest answer is to agree, or to say openly why this case is different. If the standard no longer fits the business, change it in the open, for every case alike.