ANSWER: LINGUISTIC DETERMINISM HYPOTHESIS
EXPLANATION:
LINGUISTIC DETERMINISM HYPOTHESIS is also referred to as the “Sapir–Whorf hypothesis”.
LINGUISTIC DETERMINISM HYPOTHESIS refers to the proposition which started that the spoken languages directly influence the thinking capacities of individuals.
In other words, LINGUISTIC DETERMINISM HYPOTHESIS expressed that language and its framework elicits humans knowledge or their thinking capacity (including memory and perception).
Hence, individuals with ability to speak varying languages as their native language have higher thinking processes.
It also established that individuals experience their immediate environment based on the structure of the language use always.
Thus, the absence of the word ‘infinity’ in Norman’s native language, deprive him the ability to think and understand the word and it's concept.