An information model provides formalism to the description of a problem domain without constraining how that description is mapped to an actual implementation in software.
Legal realists rejected formalism and static legal rules; instead, they searched for the experiential and the role of human idiosyncrasy in the development of law.
This was perhaps because of oppositions between his formalism (literature) formalist style and the advocates of proletarian literature, who misjudged him as a petty bourgeois.