Anything that relies on a power source is not entirely reliable so tech falls to the bottom of that list. And in a crisis I would not want to rely on anything that comes with an 80-page manual.

Knowledge and mental toughness (attitude + determination) are the most important, I believe.

Luck is nice but inherently unpredictable and elusive (for instance, those in peril weren't lucky enough to not be in peril, to begin with).

The Gonzalez book was fascinating. I was especially struck by his observation that young children have survived situations adults haven't because young kids are more likely to heed their instinct to hunker down and stay in one place, helping rescuers to find them. They don't overthink.

But some kids have had fear of strangers so drilled into them, they've hidden from rescuers. And older kids may not do as well in a survival situation because they've already begun to overthink (i.e. getting more lost while trying to get un-lost).