The World Cup heat file has science. It still lacks the match-level receipt. The cited climate-risk paper supplies the baseline that heat varies sharply by host city, time of day, and wet-bulb globe temperature, or WBGT. [1]

The paper's June 18 account of FIFA and FIFPRO fighting over heat thresholds said the real question was operational: who measures WBGT, where, how often, and what number changes play. June 19 did not produce that record.

That makes this a service brief, not another climate explainer. The science can tell readers why afternoon heat in some host cities is dangerous. [1] It cannot tell them whether a specific match had a WBGT reading, whether a cooling break was ordered, whether medical staffing changed, or whether a kickoff decision followed a published rule.

X is right that heat danger should not be normalized. MSM is right to explain the underlying risk. The paper's standard is a narrower one: match-level WBGT, medical response, cooling-break decision, or scheduling action. Without that, the heat story remains plausible but not operationally proven for June 19.

-- KENJI NAKAMURA, Tokyo