On any given day, random people share a bit of their lives with you. Sitting in the MRT, you hear snatches of conversation, spy a woman looking at a magazine page entitled "young mothers", watching a little Malay girl reading a muslim book, all these things without them realising that for just a moment, they've made you an intimate part themselves.
The same applies to you too, of course.
When you go jogging you feel eyes on you as the cars go by, someone on the bus reads over your shoulder as you scan the tabloids, a waiter at lunch takes your order or when you ask for directions, at that instant you're assimilated into their little bubbles, neither of you quite realising it.
