I learned that somebody exposed to zombie goo who frequently complains of sickness will not turn into a zombie at the end, no matter how much it is telegraphed that he's going to be, because of ...reasons.
I learned that if your new girlfriend repeatedly pulls your arse out of the fire and becomes a valuable zombie-fighting asset, you should repeatedly insist that she stay by herself in a poorly defensible, exposed area.
I learned that heads of powerful chemical companies frequently pick up hitch-hikers to deliver cryptic warnings to them and dress and talk like Cletus the slack-jawed Yokel.