It's a good question, I was wondering the same. Do we even have any sort of artificial means for generating that kind of pressure? I suppose we could drop someo

It's a good question, I was wondering the same. Do we even have any sort of artificial means for generating that kind of pressure? I suppose we could drop someone into a trash compactor, but it might be difficult to convince people that's more humane than a simple injection, even if it technically is.