Why Quantum Entanglement Scares Me
Data already moves fast. My room mate came home tonight and showed me a picture on her phone of her great nephew that was born less than an hour ago over two hundred miles away. That's quick, but not instantaneous. I had a real time chat with a friend of mine today at lunch through instant messaging. It was perceivably fast. He would type something and as he was typing it, I would see that he was in the process of composing his next statement, then I would receive it. That was fast, but not instantaneous. I've been to a shooting range and seen guns being fired and heard the shot less than a second later. Also fast, but not instantaneous. I've gone outside and looked at the sun and the stars and my hand in front of my face. All of those things were perceived by my brain as having happened at that moment because that is when I saw the light reflect off of my hand and shine into my eye. That's light speed, but again, not instantaneous.
Light moves at roughly 186,300 miles per second; a speed we always thought was the universal speed limit. There is no way to know/see/perceive something faster than the time it took the light from the thing being observed to travel to the observer. With quantum entanglement that is thrown out the door.
If my hand in front of my face wanted to tell me something, the fastest way for me to know it would be to see it, light reflecting off of it travels faster than the impulses sent through my nervous system. With quantum entanglement, it is possible for my hand to tell something to my brain faster than light could conduct it. Take that to the next level, two systems could communicate across space faster than the speed of light if they had correspondingly entangled particles -- a sort of f.t.l. Morse Code.
Instantaneous is faster than the speed of light. We aren't yet able to send a signal before the sending happens. That is not physically possible yet, but is something that should be considered seriously. What are the philosophical implications of backwards in time communication?
It would mean that time is something permeable that can be pierced and traversed like space. It would effectively put all of existence at our fingertips. It would also mean that if we can send a message back in time, someone in the future can send one back to us as well, which is what scares me the most.
If a message from the future (however far in advance that future may be) that means one of two things:
- Our future is destined (at least up until the moment the signal was sent) and that nothing can be changed to that point. Calvin was right and we are predestined to live out our lives and there is no changing it. Our decisions have been made and our lives are simply rail cars on the tracks of time. Bringing into question our level of influence. If all of our decisions have been made and our future is written, where does the responsibility for anything and everything lie?
- The other is that the future as we are communicating is simply one possibility of how things could be. We are not destined to live up to that future, but that it is one possibility of what could happen. That would bring into question the validity of the data being transmitted and would then take on a more "Sliders" approach to the universe and all its dimensions and alternate realities.
I don't think the second outcome is likely, but I don't like the moral implications the first one has either. So while I am excited for the possibilities that traversing time has to offer, I am terrified at what it would necessarily mean.
Labels: entanglement, ftl, musing, quantum, rant, time travel







