You're forgetting the fourth state: too hot/too cold.
I only mention it because, as any parent knows, infants are effectively small finite state machines, and you can deal with their crying even half-awake, if you go through a mental checklist. But you'd better not miss a state to check :).
Or the fifth state, colic. It can last for months and the child will cry every waking hour. The binary flag is stuck 'on' which in my experience set every family member into a meltdown so you'll get no relief, because a baby that cries inconsolably for hours (months!) on end and can't be fixed is kryptonite to many people.
So yeah, good fucking luck if that happens. You'll have to feed on a schedule, change regularly and check even more regularly, guess appropriate temperature etc because the baby will be screaming bloody murder if awake no matter what.
I only mention it because, as any parent knows, infants are effectively small finite state machines, and you can deal with their crying even half-awake, if you go through a mental checklist. But you'd better not miss a state to check :).