Was it really a snake talking to Eve or was it her subconscious?

So what is my source for this question, my answer: "Me". As the statement goes there's nothing new under the sun. And according to the biblical teachings that snakes use to talk is to me trying to undermined what the truth actually is. It seems that we (humans) have the ability to think up positive and negative things. And according to our surroundings (enviroment) can possibly influence our choices. I'm not saying this is true for all. But there is something that influence all humans into behaving the way we do. What is it? And why can't we defeat every negative thought that comes to mind, with or without the help of God you choose. But back to the fact I've notice through this experiment of life is that when humans are told not to do something they do it anyway, we all have done this regardless of what it may be or at what age. God told eve not to. But before she initiated the sin, she was thinking about what God told her and due to that it seems that her subconscious (which is still herself and her own mind) saw how beautiful this apple was. Whatever made her do it rather it's the beauty of the apple or the lust to be wise like God, whatever it was she initated the act due to what God told her not to do. The point is if God would have never told her would she have done it. And also if God would have never put the Tree in the Garden, then there would be no thought of disobedience. Imagine yourself being a drug dealer with a key load in front of a crack head. You left for 2-3 days and upon your return do you really expect the crack head not to mess with it. Plus how can some say at one time the world was perfect without sin, when the Tree of knowledge was in the midst of the Garden. What do you think?