alt Hacker News> as a species we've spent the vast majority of our existence sleeping on the literal ground
This isn't true, though. For the majority of human history, humans set up grass and leaf bedding atop campfire ash, using animal furs for additional insulation when needed. Ash and leaves are electrical insulators.
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cheesecakegood • yesterday at 7:39 PM
Yeah, because sleeping directly on the ground leaches heat from your body too fast, because of said lack of insulation. Sleeping too directly on the ground is also particularly dangerous in survival scenarios, doubly so if you are cold or wet. A common mistake when assembling a temporary shelter is to spend all your time on the “roof” but very little on the “floor”.
All those materials with the exception of animal furs are commonly found on or in the ground. Given the relative lack of multistory buildings throughout our history, that's basically just making the ground a few inches taller. The ground itself is highly varied as well, with various combinations of rock, dirt, sand, etc.
I was thinking more that in the developed world most people have much more separation from anything resembling the ground, both in terms of materials and physical distance that would substantially alter any electrical characteristics.
In the off chance I win the lottery I intend to fund serious robust studies of minor stuff like this. Would be the easiest placebo ever, just internally disconnect some of the mats.