Getting worked up over something that hasn't happened, does not currently have a high chance of happening, and yet someone is venting about what could happen if it does, in fact, happen. This usually involves an unknown number of people being distracted by such an occurrence. Sometimes, it even ends up including all people involved in the conversation even though there's absolutely nothing productive about having the conversation to begin with.
Scenario Venter: If we do this now, who knows what could happen. Like, if we do this and all of a sudden it doesn't work anymore, all hell is going to break loose.
Logical Person Involved: Just change the damn batteries. You're scenario venting over something that is so unlikely to be an issue and you're wasting everyone's time.