My friends and I spent today discussing free will and the functioning of the universe. One of my friends is a big proponent of the deterministic universe model and I and my other friend favored the idea of free will. It was quite the roller-coaster ride of a debate.
We came to the conclusion that free will can only exist if there is a nebulous metaphysical aspect to our beings that lets us overcome causation and the laws of the universe. If that is not the case there are two non-religious alternatives.
The first is the deterministic universe model. In this model everything that happens was determined at the creation of the universe. Every action can be predicted if all inputs in the equation are known. If you go out and kill a hooker tonight, it was written on the great cosmic map billions of years ago that you would do so.
There are some distasteful implications derived from this model. The first, as discussed, is the lack of free will. You have no choice in your actions, only the illusion of choice. It seems like your decisions are your own but they are really just the result of causation. If you have a choice to eat ice cream or cookies and you eat cookies, there was never a chance that you would have eaten ice cream instead.
Another implication is that you are stuck with your lot in life. If you are 43 living in your mom’s basement with no job, no friends, and no life, it was not your own doing that brought you to this situation. The universe determined this path for you at it’s creation. If the universal map says your life will continue to be this way, there’s nothing you can do about it. Sucks doesn’t it? On the other hand if everything goes your way and you have a happy family, lots of money, etc. then you are the product of a fortunate series of cause and effect. “Lucky” you. Too bad there is no luck or randomness in this universe.
The second option is the random universe model. This model hinges on the fact that we don’t understand the entire composition of the sub-atomic universe. In this model, actions are affected by random influence of unknown natural particles or forces. The idea here is that if you are torn between two decisions, your brain (cells, waves, receptors, etc) can be influenced by these unknown effects and sway your actions one way or the other. So, if you are deciding whether to eat ice cream or cookies and something fires in a string in the 10th dimension of a region of space that falls in your brain, you might choose to eat ice cream. If it doesn’t fire, or if something fires in the 9th dimension, you might choose to eat cookies.
This option still does not allow for free will. Your actions are a combination of causation and random chance. The future is uncertain in this model. It is not mapped out infinitely from creation like the deterministic model.
In this model you are still essentially stuck with one path through life, but it is determined on the fly, and the available options are greatly increased. In the deterministic model your path is set in stone from the start and that is the only option. The only factors involved are the initial inputs that result from the creation of the universe. How that creation happens determines your life. In the random model the options of life paths are made up of an infinite pool that vary based on the outcomes of decisions on the path.
For an example of the differences take this scenario. You come home and find your spouse cheating on you. In a deterministic universe you know you shouldn’t kill them but your course is set. You kill your spouse. In a random universe, you know you shouldn’t kill them and an unknown influence keeps you from doing so. In another place or time you might have killed them, but you lucked out this time.
Religious implications can be brought into either model. The first model is the classic “god’s plan” idea, where everything that happens does so because god wants it to. The second model can be explained by an interventionist god who sways our decisions in “mysterious ways”.
I would be upset and depressed by my lack of free will, but apparently I didn’t luck out or I wasn’t destined to be so. It’s a good thing there’s still the illusion of free will in both models, otherwise life would be like a ride at an amusement park. If you like it, great. If you’re throwing up or afraid of heights, sucks to be you.