The concept of epicene nouns varies, they may not exist in some languages or have different rules. Unlike English, Swedish uses 'hen' as an epicene pronoun.
Pro Tip 2/3
Avoids Assumptions
'Epicene' ensures a person's gender isn't presumed when it's unknown or irrelevant. The epicene 'they' is useful when you don't know someone's gender.
Pro Tip 3/3
Inclusive Language
Using epicene expressions helps create a more gender-inclusive environment. Job applications often use epicene language to welcome all genders.