Don't mean to be *too* sad, but here's another contradiction. In "The Suicide", Jerry doesn't know what the "coma etiquette" is, and Kramer says there isn't one, and that you give the guy "24 hours to get out of it". However, in "The Comeback", Kramer doesn't know it is possible to come out of a coma.
Kramer: "I didn't know it was possible to come out of a coma" Jerry: "I didn't know it was possible not to know that."
Man, I'm sad.