A TikTok video clip that includes a veteran pilot has get rid of gentle on just a little-identified facet of air vacation history – why airplane windows are round.????? ???????? ????? ?? ?????????? . ????? ????? ?? ?????????? . ????????? ????? ?? ?????????? . ?????? ????? ?? ?????????? . ??? ?????? ????? ?? ?????????? . ???? ???? ????? ?? ???????