The key question is whether the evidence as a whole tells a coherent story (or more than one). The tent was high on that mountain (regardless of the exact location), something happened that led to them thinking it was going to collapse or get blown apart, they decided to quickly secure it, thinking they could survive the night by lighting a fire down by the trees (and possibly going to the "den" after warming up), and then in the morning they'd go back and deal with the tent issue. When I first learned about the DPI, which I think was at least ten years ago, it was portrayed as a great mystery, and similar incidents were not mentioned (nor were things like the many used matched around the fire site, the near certainty that some of the 7 took some of the clothes off the "two Yuris," who clearly died first, and the many branches that were broken off the trees and lie scattered about). Since then I've read about similar incidents and learned more about the DPI evidence. leading me to conclude that their plan didn't work because they engaged in too much physical activity and then went near the fire (perhaps sitting on branches), which led to a lot of sweating. In this condition, once the fire lessens or dies out (assuming that it was good enough to begin with, which doesn't seem to be the case for at least the two Yuris), there's no way to survive under the circumstances. If the "ravine 4" didn't fall through the snow and onto a rocky creek, perhaps they would have survived huddling together, since two of the four were dressed a lot better and the other two took some clothes from the two Yuris, but the only way to get a sense of this is to do a professional reconstruction.