The users outside the United States might not be familiar with the writer Malcolm Gladwell. He writes and speaks about economics in a practical way. One of his videos relevant to DPI explains how a Columbian airliner ran out of gas while circling JFK Airport in New York. Basically, the Colombian co-pilot never got around to telling the air-traffic controllers "We're running out of gas and we need a runway now!" He just kept hinting at it and saying "please." The JFK ATCs are notoriously pushy and overbearing and take charge. The Colombian airline is very top-down, with the pilot being autocratic. So the co-pilot was used to being deferential. Which led to him not being insistent enough, even in a life or death situation.
When people look at the DPI, they put a rational framework over the events. It seems like an irrational but explainable approach might be better. In particular, considering group dynamics and leader/follower dynamics seems like it warrants consideration.
I was reading one of the scenarios in the Simplest Credible Scenarios thread, that of a fight breaking out among the hikers. First, these things seem relevant to me:
1) Reading around, there seem to be three possible alphas in the group: Dyatlov, the leader; Doroshenko, the guy who chased off a bear; Semyon, by virtue of age and experience. Each one ends up in a different place.
2) There's obviously a potential romantic rivalry over Zina between Dyatlov and Doroshenko. Judging from diary entries, Zina and Doroshenko seem like they might be a classic "They're a couple even when they're not a couple."
3) Tensions in the tent may have been bubbling. Dyatlov has led them off course. They're cold, tired, irritable. Finally, something set it off.
Dyatlov and Doroshenko get into a fight, inside or outside the tent. Doroshenko decides to leave the camp in the heat of the moment and persuades the other Yuri to join him, convincing themselves they can build a fire beyond the treeline. They leave.
At this point, Zina would be in shock. Her ex-boyfriend and best friend/admirer/whatever just had a fight over her. Her ex-boyfriend is walking out into severe danger. She goes to try to find them and bring them back. Maybe Dyatlov storms out after her. OR maybe she screams at Dyatlov and forces him to go with her. Rustem tags along or soon leaves thereafter. That would leave the Ravine 4 still at the tent.
Eventually, those five end up at the tree. Either 1) the tensions are still there and the Yuris refuse to return; or Zina and Dyatlov start arguing again. She storms off, back up to the tent. Dyotlov and Rustem follow. They die at different points and never make it back.
The Ravine 4 stay put for a while, but eventually leave the tent to try to find the others. They follow the fire to the cedar tree where the Yuris are freezing to death. When they get there, they decide it's too cold and/or too dark to turn back. Based on military experience, Semyon instructs the group to start digging a den. They decide that's a better option than trying to make it back in the dark. They raid the bodies of the Yuris for clothes. They have some kind of fall that causes the major injuries.
Obviously, this doesn't account for a few points. Most importantly, who cut the big hole in the tent, and when and why. But it gives an explanation that relies more on emotional dynamics, leadership dynamics, and the realization that the decisions don't need to be made in a perfectly rational way by the entire group, only a few need to make the choices, and the other follow.