[whimsicalism]

i don’t really know what to say, i wasn’t suggesting that the ground is very conductive of heat - but it is certainly much more conductive than the air is. just search.

the reason we wear coats has more to do with convection than the heat conduction of air

[IshKebab]

I said open air.

[whimsicalism]

convection is orthogonal to conduction/insulation properties and this sand pit is in a silo. i don’t understand how your point is related to the notion that heat would diffuse if we just were heating up the ground