GMAT Sentence Correction (SC) | Re: Some historians of science have argued that science moves

In formal writing, we use ‘so … as’ in negative connotations and ‘as… as’ in affirmative contexts.
Examples for so…as.
Tom is not so smart as Dick is
GRE is not so difficult as GMAT is
Child prodigies are marked not so much by their skills as by the fact that these skills are fully developed at a very early age.
Examples for as…as
Sita is as bold as Gita
An inventory equal to 90 days sales is as much as even the strongest businesses carry

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