A TikTok video that includes a veteran pilot has get rid of light on slightly-known facet of air journey historical past – why plane windows are round.????? ???????? ????? ?? ?????????? . ????? ????? ?? ?????????? . ????????? ????? ?? ?????????? . ?????? ????? ?? ?????????? . ??? ?????? ????? ?? ?????????? . ???? ???? ????? ?? ?????????? . ?????