Not smoke from the stove. But smoke as in cigarette smoke or the lack thereof. Zina wrote in the group diary on Jan. 23: "The boys solemnly swore not to smoke the entire trip. I wonder how much will power they have to get by without cigarettes?" Nicotine withdrawal is serious business: anxiety, depression, irritability, clouded thinking. Maybe the guys argued and fought on the night of Feb. 1 with tragic results. I grant you this is a crazy idea and should be thrown on the large stack of other crazy ideas. But my point is maybe what caused the tragedy was deceptively simple, but true to human nature – a jealous fight over the girls; a sound mistaken for the sound of an avalanche; dissatisfaction over Igor's decision making; cries for help as someone starts to roll down the ridge from the strong wind. That's not to say that the cause wasn't from a more complex and dramatic event: an exploding missile; a ferocious lightning storm; retribution from the KGB and so on. Any one of these scenarios and others equally dramatic could be the cause. But simple causes shouldn't be overlooked. Maybe Occam's Razor makes sense after all.