Ventilation vs Insulation
We run Paradise hive, polystyrene, the only ventilation is in the floor, the rest is invented, sealed polystyrene hive.
They do not condensate and winter better than our wooden hives with ventilated lids.
They also perform very well in summer where we can hit 40C often in summer, again only the floor vent.
Bee logic and human logic are miles apart, bees spend a lot of time fixing up what we think is good for them.