Zones:

Broadly, the four distinct zones are: Intimate (0-2ft.), Personal (2-4 ft), Social (4-12ft.) and Public (more than 12 ft.). When strangers enter the wrong zone, we feel uncomfortable. For example in an airplane/elevator, this space gets compromised and we deal with it by ‘dehumanising’ (making no eye contact and acting busy) those around us. Loud cell phone conversations and the airplane passenger seated in front of you who slams the seatback on your face, just as you are bending to pick up your laptop, all are trespassing this space.