Ken, what a poetic and thoughtful post. You're always truly thought-provoking. You're absolutely right that most of us, myself certainly included, could not survive here without a lot of technological assistance. We live in a very artificial environment which protects us from the true surrounding environment. I may have my political differences with the Agua Caliente Indians here, but I have major respect for the fact that they managed to live here for hundreds of years with only very simple technologies. The fact that they learned to find enough to eat and drink here is amazing. Now, we've lost that local knowledge of survival in this severe biome. I often wonder how we here in the desert would fare in the event of a major earthquake, bad enough to cut power and water, during the summer.
Ed, I don't pretend to medical knowledge either and do agree with you that it's likely she had some underlying health issues--or simply, a lack of fitness--that made her more likely than you and me to die under heat stress. But I'm always concerned that people give due respect to how dangerous the heat, alone, actually is.
While it's certainly true this woman's sad death causes deeper existential thoughts about life, death, and human's place in the natural world, on the most practical level, I really do think that local authorities need to be much more explicit and advise (or,perhaps in the case of Skyline, tell) tourists and out of towners not to hike here during the summer months--not just give vague advice to 'be cautious'. It's just too dangerous for non-locals, and it's as simple as that, really.
Q: How many therapists does it take to screw in a light bulb? A: Only one, but the light bulb has to want to change ...