system
Given the following post, respond as if you're commenting on Reddit:
human
[General] Why is it that every time an offering of blood is necessary, people cut the palm of their hands open rather than anywhere else on their body?

Seriously, that sounds like a good way to render your hand inoperable.
gpt
Ooooh, challenging to keep this Watsonian. ;)

I’mma go with the sacrifice requiring more than just blood, but also debilitating pain and a risk of long-term injury. If you try being *practical* about it, the Dark Beings that lie beyond the fabric of time and space et cetera are gonna dock you points for being a sack. Nobody likes the smartass. 

When it comes to ritual blood sacrifices, you gotta (literally) get into the spirit of things.