Equation 8 · Part 2 · How AI Inference Economics Actually Work
subscript
subscript
What this part means
The lower label selects a particular version, component, or indexed member of the quantity. For example, x₀ and xₜ can be values at different positions.
Its job in the formula
A subscript distinguishes a version, component, step, or member of a quantity. It does not automatically mean multiplication.
Full expression→subscript→Article meaning
The passage around this formula
in that identity is not a rounding error at fleet scale. The International Energy Agency’s 2025 analysis found that global electricity demand from data centers grew 17% in 2025, with demand from AI-focused data centers specifically growing around 50% in the same year, and projects data-center electricity consumption to roughly double by 2030 as a result [ 7 ] . The same analysis notes that measured per individual task, the energy required for a given AI task has been falling by at least an order of magnitude annually in recent years — a statement that sits alongside, not in contradiction to, the aggregate demand growth, because total demand is the product of energy-per-task…
Learn the underlying idea
A subscript is a label attached below a symbol. It often selects a time step, component, category, or member of a sequence.
Open the illustrated subscripts: which member of a family? guide →
Sources cited in the surrounding passage
These citations provide research context; check each source for the exact claim it supports.