FIFA has confirmed that the expansion of the World Cup to 64 teams was designed to allow the tournament to continue functioning in the event that any single confederation withdraws, following UEFA’s warning that it will boycott the competition if FIFA proceeds with the sale of its commercial rights.

An internal planning document, described to The Brussels Monitor by two people who have read it, sets out what it calls “confederation-level redundancy.” The principle is that no individual member of the system should be capable of taking the system down.

“You never design a tournament with a single point of failure,” a consultant who worked on the model said. “Under 32 teams, losing Europe was catastrophic. Under 48, it was serious. Under 64, it is a reallocation exercise. The slots redistribute. The fixtures hold. The broadcast schedule is unaffected. That is the whole point of the architecture.”

The document refers to this as graceful degradation, a term borrowed from engineering, defined as a system continuing to operate at reduced quality rather than failing outright. Asked whether reduced quality was a concern, given that European teams have won three of the last four World Cups and supplied both finalists in 2018, the consultant said quality was “not the optimised variable.”

“The optimised variable is 64,” he said. “Sixty-four teams play. Sixty-four teams generate 128 matches. The matches generate the revenue. Whether the teams are good is a separate question that the model does not ask.”

The document reportedly models the withdrawal of each confederation in turn. CONMEBOL’s removal is flagged as “historically sensitive.” CAF’s is flagged as “reputationally difficult.” UEFA’s is flagged as “financially significant but structurally survivable.”

Asked which confederation could not be removed without the tournament collapsing, FIFA declined to comment. The document does not appear to model one.

It does, however, contain a final section titled “Non-Removable Components.” The section lists one entry.