أنشئ حسابًا أو سجّل الدخول للانضمام إلى مجتمعك المهني.
The length of an arm, outstretched, is deemed to be the distance allowable between two people for them to maintain their "personal space"! If you get within an arm's length of someone without their permission you are invading their "personal space" or their "privacy".
