New York City subway cars are not exactly places for interaction between strangers. Most people avoid eye contact unless they flirting or just plain creepy. Occasionally, someone breaks the unwritten rule of respecting your personal space and you are forced to react. Artist George Ferrandi tested a few people with an interesting photo series that you should check out.

Ferrandi named the series "I Felt Like I Knew You," and writes on her website: "I ride the NYC subway trains, usually in the evening when the seats are full. I focus on the shape of the space between the person sitting next to me and myself. I attempt to mentally and emotionally re-sculpt that space. In my mind, I reshape it- from the stiff and guarded space between strangers to the soft and yielding space between friends. I direct all my energy to this space between us. When the space palpably changes, and I completely feel like the stranger sitting next to me is my friend, I rest my head on that person's shoulder." 

Some of the strangers in the photos were OK with it, and others were clearly not. Check out a few of the reaction shots below, and head to Ferrandi's website to see more. We don't recommend that you try this on your way home from work today.

[via PetaPixel]