Nice interpretation,,Ami khub like kore apnar video,, whenever I feel any problem in structure first go through your playlist after that if I don't find then go for other,,
in last case, suction arrow shown outer of that house, I agreed. but inner arrow , inside house! (it simply counteracting outer and inner).. i am not able to understand that case. teach pls ,. as you told due to high velocity, low external pressure, there is opening there. what philosophy happens there?