system
Given the following post, respond as if you're commenting on Reddit:
human
[The Witcher] Why do Geralt and other Witchers bother carrying two swords: one steel sword (for humans and beasts) and one silver sword (for monsters), when one silver sword would surely be okay?

If the aim of slaying humans and beasts with a sword is to maim them, why would using the same silver sword not suffice? It's still damaging physically, and you can still apply oils and poisons as you wish. I see no point if the steel sword existing if you already have a sword that's able to kill monsters more effectively

TLDR: Silver swords would still fuck up humans, so why bother lugging around a steel sword?

Edit: it's been answered, thanks!
gpt
Right, so, this is a misconception about Witcher Lore based on the games, in the books and maybe the show it's different (I haven't watched season 2 yet, so no spoilers please).

The Witchers tend to use their steel swords against almost everything, the silver sword in itself is not actually used against that many monsters, only ones that are explicitly only really weak to silver, and the Witcher needs the extra edge against them, the steel sword works fine against almost everything else.

Most monsters ARE weak to silver, but, in general, like in reality, silver is expensive, and not that durable, they don't like "wasting" the silver sword on "basic" monsters when steel will cut them up just fine.