Cost–Benefit Assessment Protocol¶

Assessment protocol — instantiates Deadweight Loss Reduction

Weighs a proposed distortion repair on full welfare terms — surplus recovered, who gains and loses, and how robust the case is — instead of accepting 'it costs less' as proof it is better.

Once a wedge has been diagnosed, the pressure is to justify a repair with a single flattering number — usually a lower unit cost — and move on. Cost–Benefit Assessment Protocol is the discipline that refuses that shortcut. It forces the case for a repair to be stated as a full welfare comparison: the surplus the repair would recover, the costs and access it would sacrifice, the parties on each side of the ledger, and how sensitive the whole verdict is to the assumptions holding it up. Its defining move is treating "cheaper" and "better" as different claims that must be separately earned — a redesign that lowers price while destroying quality, shifting cost onto a hidden party, or resting on one optimistic assumption fails the protocol even when the headline cost falls. Where the Distortion-Reduction Review maps the wedge, this protocol weighs it, converting a rough magnitude into a structured, checkable argument for or against acting.

Example¶

A state is deciding whether to repeal its occupational license for natural-hair braiders, whose training requirement runs to hundreds of costly hours largely unrelated to braiding. The protocol builds the ledger rather than the slogan. On the benefit side: entry rises, prices fall, and the gains-from-trade currently blocked — the braiding services that simply don't happen because licensure priced the braiders out — get recovered; that recovered surplus is the Harberger-triangle estimate.^[1] On the cost side: the plausible quality or safety loss from unlicensed practice, sized honestly. The distributional pass makes the transfer explicit — incumbent licensees lose the rents the barrier protected, while entrants and consumers gain — so "net positive" is not allowed to hide a group being harmed.

The sensitivity pass is what makes it a real test rather than a sales deck: the verdict is re-run against the one soft assumption — the rate of consumer harm from unlicensed braiding — and reported as a condition, "the repeal is net-positive unless harm turns out several times higher than any comparable trade suggests." That single sentence hands the decision-makers the exact question the choice hinges on, instead of a headline they must take on faith.

How it works¶

Build the two-sided ledger. Enumerate benefits (recovered surplus, access, time, capacity) and costs (quality, safety, revenue, transition) in comparable terms — refusing to let a lower unit cost stand in for net gain.
Estimate the recovered surplus. Quantify the blocked value the repair would unlock, with its assumptions attached, so the benefit side is a magnitude and not an adjective.
Run the distributional pass. Separate net effect from transfer: name who gains and who loses, so an aggregate improvement can't quietly conceal a concentrated harm.
Stress the verdict. Vary the softest assumptions and report which one the conclusion actually depends on, expressing the result as a condition rather than a point estimate.

Tuning parameters¶

Valuation breadth — how many effects get priced (pure cost, or welfare, access, externalities, and absolute resource use). Narrow the frame and you get precision about the wrong thing; widen it and comparison gets harder but honest.
Standing — whose costs and benefits count. Draw the circle tightly around one party and almost any repair looks good; widen it to everyone affected and the ledger changes.
Discount and time horizon — how heavily delayed or uncertain effects are weighted. Steep discounting flatters repairs whose damage arrives later.
Sensitivity envelope — how many assumptions get stress-tested and how wide the swings. A single base case invites false confidence; a full sweep surfaces the binding assumption.
Decision rule — whether the output is a go/no-go, a ranked comparison of alternatives, or a condition the benefit must clear. Pick the form the decision can actually act on.

When it helps, and when it misleads¶

Its strength is that it converts "trust me, it's more efficient" into an argument whose parts can be inspected: the surplus is sized, the losers are named, and the verdict is pinned to an assumption someone can challenge. It is the mechanism that keeps the archetype from rewarding cost-cutting that merely relocates the cost.

Its failure modes are the familiar pathologies of cost–benefit work, and they are the reason the protocol must be applied honestly rather than performed. The most common misuse is running it backwards — assembling the ledger after the decision to manufacture a business case, with standing drawn and discount rates chosen to reach the wanted answer. It also systematically under-weights what resists pricing — dignity, access for the marginal user, distributional fairness — so a tidy net-positive can rest on having ignored the hardest-to-quantify harm. The discipline that keeps it honest is to fix standing, the discount rate, and the assumption set before running the numbers, to carry the un-priced effects as named line items rather than silent omissions, and to report the binding assumption instead of the headline.

How it implements the components¶

Cost–Benefit Assessment Protocol realizes the archetype's evaluative machinery — the components that turn a diagnosed wedge into a defensible verdict:

cost_benefit_assessment_frame — the structured two-sided ledger itself: benefits, costs, alternatives, and assumptions in comparable terms.
surplus_estimate — quantifies the blocked value a repair would recover, stated as a magnitude with its assumptions, as the benefit side of the ledger.
distributional_review — separates net gain from transfer, forcing an aggregate improvement to survive the question of who bears the loss.
sensitivity_analysis — varies the soft assumptions and reports the one the verdict hinges on, converting a point estimate into a condition.

It does NOT map the wedge or separate protected from avoidable (distortion_map, protected_constraint_safeguard) — that is the Distortion-Reduction Review; it does not lay incidence out party-by-party for governance (affected_party_incidence_map) — that is the Impact Assessment Table; and it changes no rule (redesign_lever).

Instantiates: Deadweight Loss Reduction — this protocol is the archetype's evaluative core, deciding whether a diagnosed wedge is worth repairing.
Consumes: Distortion-Reduction Review supplies the diagnosed wedge and its rough surplus magnitude, which this protocol re-estimates and weighs.
Sibling mechanisms: Distortion-Reduction Review · Impact Assessment Table · Price-Control Redesign · Tariff, Fee, or Toll Redesign · Congestion or Capacity Pricing Adjustment · Quota or Allocation Rule Review · Permit or Approval Streamlining · Matching Improvement Program · Regulatory Simplification Pilot · Sunset Clause Review

References¶

[1] The Harberger triangle is the standard geometric estimate of the deadweight loss from a tax, price wedge, or similar distortion — the area between supply and demand over the trades the wedge prevents. It is the canonical way to put an approximate size on the surplus a repair would recover, which is exactly the benefit side this protocol needs. ↩