I’m not saying passive cooling doesn’t work, I’m aware of convection cooling systems, I’m just saying the article talks all about highs and doesn’t give any other data- is it capable of cooling the air below ambient? Is it simply allowing air to not creep above ambient? Does it generate measurable breeze?

I suspect it’s a combination of bricks being a heat sink and vents allowing convection currents, but I know what 100+ feels like in my garage with all the doors open and it’s still brutal.