In the second, the asker already knows they're not supposed to touch hot stoves, but are asking about it anyways. Or they're asking about touching hot stoves, without providing any reasoning for why it is absolutely necessary to do so (Basically, that boils down to having a question without a goal, that we already close on IPS). Of course an answer that explains 'here's how you put your hand on a hot stove, but don't do it, use mittens' seems a bit silly under these circumstances.