Yeah, the building science/architecture had to go through a painful learning process about mold, and humidity (see the leaky condo crisis in British Columbia[1]

Yeah, the building science/architecture had to go through a painful learning process about mold, and humidity (see the leaky condo crisis in British Columbia[1]). That being said, the consensus in building science circles is now converging to the idea of building airtight buildings (i.e Passive House) with layer air and vapour barriers, along with insulation to manage moisture and heat. That way you don't sacrifice heating to manage your moisture. [1] https://en.wikipedia.org/wiki/Leaky_condo_crisis https://en.wikipedia.org/wiki/Leaky_condo_crisis