>Well, its a world being invaded by ChAoS. I always found the basic fact that you should hurry or you'll get turned into a purple j pretty intuitive, to be honest. And the details about how much you should hurry needn't be known to an unspoiled player IMO.
The thing is as you notice the character being corrupted you do realize you should hurry, but you do not realize that it increases with days passed. I was traversing the overland map at leisure not realizing what effect that would have on the future of any of my characters. Would it really be that bad if one of the NPCs, told you that you must not linger?