Last night I was having some trouble sleeping and I started to think about time travelling. I was thinking that if it were possible in the future and if it were easily accessible (like it is in the movies), then how come I haven't met my future self yet? I came up with a few reasons: My future self chose to meet me when I was too young to recognize or comprehend who he was. My future self was too old to recognize. The intergalactic robotic war in the future had left my future self so disfigured, I was rendered unrecognizable to my current self. My future self used a memory clearing device on my current self thus removing the event from my memories (like in Men In Black). My future self dies before the technology is widely available to the public. The Space/Time Lords of the future demand that all time travellers wear either a cloaking device or a temporary full body transformation device when travelling to the past. I know, I'm a geek who has watched one too many movies. But