Module 03 · CGDA — Governance & Diplomacy

Quantifying the Gap Between Pledge and Statute

Measuring the distance between what is announced and what is enacted — and the limits of such measures.

Study time: 50 min

By the end of this module you can

Choose countable indicators over composite indices
State methodology and its weaknesses openly
Avoid constructing evaluative rankings that cannot be defended

Overview

The gap between what is pledged and what is enacted is the number everyone wants and few can defend. This module teaches how to build one honestly: countable indicators over composite indices, methodology stated openly with its weaknesses, and a firm refusal to construct evaluative rankings that cannot survive scrutiny. The discipline is knowing what your number can and cannot say.

Exercise

Pick one countable indicator of the pledge-to-statute gap. State the one thing it cannot tell you.

Take a published climate ranking. Name the methodological choice that most changes the result.

Self-check

Check your understanding

According to the UNFCCC's November 2025 update, full implementation of all new NDCs would put global emissions in 2035 about: 60% below 2019 levels 12% below 2019 levels 12% above 2019 levels
For a 1.5°C pathway with no or limited overshoot, IPCC AR6 finds global GHG emissions in 2035 need to be about: 21% below 2019 43% below 2019 60% below 2019
Why are both figures expressed relative to 2019? Because the IPCC benchmarks are expressed against 2019 levels, so pledges are converted to the same base Because 2019 was the first year of the Paris Agreement Because no earlier data exist