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Equation 2 · Part 1 · Ten Failure Modes That Define Multimodal AI Systems

Symbol s_text

stexts_{\text{text}}
stexts_{\text{text}}

What this part means

the actual multimodal increment — what the removed channel contributed beyond what text alone already bought.

Its job in the formula

sts_text is a part of this expression. Its role is fixed by the surrounding article and by the operations shown in the formula.

Where the article explains it

The quantity Δ\Delta = smultis_{\text{multi}} - stexts_{\text{text}} is the actual multimodal increment — what the removed channel contributed beyond what text alone already bought.

The passage around this formula

The finding motivates a simple, checkable decomposition rather than a new metric: for any multimodal benchmark, let smultis_{\text{multi}} be the score with all modalities present and stexts_{\text{text}} be the same benchmark scored with the non-text modality removed. The quantity

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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.

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Sources cited in the article section

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