The five largest American technology companies have committed to spending somewhere near six hundred and ninety billion dollars building artificial-intelligence infrastructure this year, nearly double last year's already staggering sum, and the number conspicuously absent from every triumphant announcement is the one that would justify it: the return, the demonstrated profit, the evidence that this spending will pay for itself rather than merely continue. The absence is not an oversight; it is the structure of the thing, and the structure, a headlong competitive spending that no participant can stop and none can show will pay, has a precise analogue in biology, and the analogue is not comforting.
Biologists call it the Red Queen, after the character in Lewis Carroll who must run as fast as she can simply to stay in the same place. The concept describes evolutionary arms races in which competitors are locked into ever-escalating investment, not because the escalation improves their absolute position but because any competitor who fails to escalate falls behind the others who do, so that everyone must run faster and faster merely to maintain their relative standing, expending enormous and ever-growing resources to stay in the same competitive place. The peacock's absurd and costly tail, the arms race between predator and prey, are Red Queen dynamics: escalations that consume vast resources and confer no lasting advantage, because every competitor escalates in lockstep, and yet no individual can stop, because to stop while others run is to lose. This is precisely the structure of the AI build-out. Each company spends not because it has demonstrated the spending will pay but because its rivals are spending, and to spend less than they is to fall behind, so that the collective total escalates toward seven hundred billion dollars driven not by any calculated return but by the pure competitive logic that no one can afford to be the one who ran slower.
The counterargument is the one the participants themselves would offer, and it is not empty: that the race is real and the stakes are real, that whoever leads in artificial intelligence may command a genuinely dominant position, and that in a winner-take-most contest the enormous spending is rational insurance against the catastrophe of losing, so that the Red Queen framing, with its implication of futility, understates the real prize at the finish. This has force, and it is why the spending is not simply irrational. But notice what the framing exposes: the assumption of a finish line, a moment when the race ends and the leader collects a decisive, durable prize, and it is precisely this finish line that the missing return number calls into question. A Red Queen race is defined by the absence of such a resolution, by the fact that the escalation is permanent, that there is no point at which anyone can stop running and enjoy the winnings, because the competitors keep coming and the running never ends. If the AI race has a true finish line, a point of durable dominance, then the spending may be justified; but no one has demonstrated that it does, and the pattern so far, each advance quickly matched, each lead eroded, each new model soon equalled, looks far more like a Red Queen race with no terminus than like a sprint to a decisive prize. The spending assumes a finish line that the evidence does not show, and a race with no finish line is not an investment but a treadmill.
And that is the question the missing number finally poses, beneath all the announcements: whether this is a race that someone wins, or a race that everyone is simply condemned to keep running, spending more each year to stay in the same relative place, until the spending exhausts the runners or the whole contest is revealed to have had no finish line at all. The Red Queen dynamic is stable precisely because no individual can defect; each company, rationally, must keep spending as long as the others do, and so the collective total climbs, seven hundred billion this year and more next, driven by a logic that guarantees the running without guaranteeing the prize. The participants call it a race to the future, and perhaps it is; but a race is defined by its finish line, and the number that would prove there is one, the return, the payoff, the durable advantage that ends the running, is the number no one will name, because to name it would be to admit that after nearly seven hundred billion dollars, doubled again, no one can yet point to where the running stops and the winning begins. This paper has asked for that number for three years. It is still missing, and the spending resting on its absence has just doubled once more, and the Queen runs on.