When I was in my last year of junior high I had a clash with my dreaded physics teacher Madame Delpozzo. Ever since I skipped anything related to science in school and have been unfortunately unable to understand most physical events in everyday life. Repecka, however, is an excellent teacher and I think I more or less understood how air should circulate in a coop and how one should adapt ventilation in the coop to the environment. Thank you so much and I wish Madame Delpozzo had been a chicken.