Because they are dead and are meant to stay that way, while heads frozen in cryonics are meant to be revived. Severed heads also have faces so they are more human-like than vat-brains so they can evoke a greater emotional reaction.
Yeah, I think it’s mainly the heads/brains distinction. Even though a person is much more their brain than their face, we don’t intuitively think of brains as people the same way we think of bodies/heads/faces as people.
Because they are dead and are meant to stay that way, while heads frozen in cryonics are meant to be revived. Severed heads also have faces so they are more human-like than vat-brains so they can evoke a greater emotional reaction.
Yeah, I think it’s mainly the heads/brains distinction. Even though a person is much more their brain than their face, we don’t intuitively think of brains as people the same way we think of bodies/heads/faces as people.