Master of their fate
There’s a hefty little thread over on the Forge about ad lib GMing. (Well, it starts out as a thread about player fulfillment and winds up as a big discussion about “No Myth” roleplaying, but you know, it’s still rock and roll to me. Ad lib GMing, with player acceptance. OK.) The early advice from Le Joueur is very solid and can be turned to slightly less extreme ends. My experience is that many players need the possibility of failure in a way that his Complication theory doesn’t really address. To put it differently: ends must be mutable in play. And… hm. Ah. ...