The Disaster Index registers 6.8 for the Ferguson dependency entry. For reference, the Morocco result — a 1-0 defeat in which Scotland conceded inside 71 seconds and absorbed 78% first-half possession — sits in the same campaign ledger. The Index does not rank these events against each other. It records what they share: both are consequences of decisions made before the tournament began.
Scotland face Brazil at Hard Rock Stadium on 24 June, their third Group C fixture, needing a result that their campaign mathematics now demand. The highest-pressure environment Scotland have encountered in 28 years. One wins, one needs to advance, one cannot.
The midfield architecture Scotland have constructed for this campaign routes through a single organising presence. Ferguson has functioned as the primary connective tissue: the player through whom shape is maintained, transitions are managed, and the defensive structure behind him is given its instructions. This is not a controversial observation. It is what the evidence shows across the qualifying campaign and the two fixtures already played.
The problem the Index is naming is not injury. Ferguson is fit. Ferguson is selected. The problem is simpler and older than that: a system with one point of failure is a system whose failure mode has already been specified. The question is not whether that specification is correct. The question is whether the construction was aware of it.
The answer, across this campaign's building phase, appears to be: yes. The squad was assembled, the tactical framework was set, and the specific condition under which everything becomes fragile was permitted to remain. Permitted is the right word. This was not an oversight. There are Scottish footballers. Choices were made about which ones to build around. The result is the current architecture.
Scotland have visited this place before. The record does not require elaboration. The pattern of identifying one midfielder as irreplaceable, then learning precisely what that word means at the moment when something would need to replace him — this record has been kept. The specific entries are not the point. The point is that the pattern exists, that it is recognisable, and that recognising it did not change what was built.
Brazil is not the cause of the dependency. Brazil is the occasion on which the dependency will be load-tested at maximum specification. If Ferguson functions, Scotland have a shape capable of competing. If anything — form, fatigue, contact, tactical suppression — interrupts that function, what the squad contains as alternative architecture becomes the relevant question. That question has not been answered in the two fixtures played so far, because it has not been tested.
The construction phase is over. The structure is the structure. Hard Rock Stadium will not care what the building looked like on the drawing board.