Original question by @tetris11@lemmy.ml
To let a breeze into your room, do your windows open out from the bottom or the top?
If your windows are stacked (upper and lower) which part opens and which part stays fixed?
(Germans with 3D windows don’t count. Lüften is a weird cultish ritual and you should all feel bad.)
Front of the house inwards, back of the house outwards except for upstairs, there it’s always inwards. Same with doors. Back door outwards, front door inwards.