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Comment by easy_rider | Hacker News Reader

Valid point. I'm not a doctor, but I'm guessing the immediate symptoms of hyperthermia - i.e. profuse sweating, blushing - could be masked by such a device when it is tricking your brain that the skin surface temperature is lower in relation to the the actual. Core and skin surface temperatures have intricate relationships in regards to heat dispersion through blood circulation.

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i clicked on the link expecting that they actually cool the blood flow like this (only using more compact wrist device instead of whole glove as we aren't talking extra quick cooling of sweating athletes)

http://news.stanford.edu/news/2012/august/cooling-glove-rese...

"The newest version of the device is a rigid plastic mitt, attached by a hose to what looks like a portable cooler. When Grahn sticks his hand in the airtight glove, the device creates a slight vacuum. The veins in the palm expand, drawing blood into the AVAs, where it is rapidly cooled by water circulating through the glove's plastic lining."

I was also expecting it to be about the Stanford cooling glove.

Most of the criticism above is because it's _not_ about the Stanford cooling glove or any technology that actually controls core body temperature. All this does is change one's perception of hot or cold. Even if it did a perfect job of that, which it won't, it won't keep you from dying of hypo- or hyperthermia. It won't replace air conditioning because it won't do anything about the humidity in the air, which is a major discomfort factor in the summer in most non-desert climates. It's an interesting bit of psychology but it could do without overblown claims, and I personally view energy-saving as falling in that category.

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