Breakdown of Twoja niewiedza jest niebezpieczna, a ty tego nie rozumiesz.
to
this
być
to be
ty
you (singular)
nie
no / not
Questions & Answers about Twoja niewiedza jest niebezpieczna, a ty tego nie rozumiesz.
Why is niewiedza written as one solid word instead of nie wiedza?
Niewiedza is a noun meaning "ignorance" (literally "non-knowledge"). In Polish, the negative particle nie is written together with nouns when it creates a direct antonym or a new, single concept.
Does the same joint-spelling rule apply to the adjective niebezpieczna?
If we join nie with nouns and adjectives, why is nie rozumiesz written as two separate words?
Why does the sentence use the genitive tego instead of the accusative to?
This is a classic example of the genitive of negation. The verb rozumieć (to understand) normally takes a direct object in the accusative case, like rozumiem to (I understand this). However, whenever a verb that takes the accusative is negated, its direct object must flip to the genitive case, which turns to into tego.