Not sure how many parts there are to this. I stated in another post about mankind's disregard of the soul as equal to the mind and body. And this post, more or less, talks a little more about that issue.
Maybe what I have to say is fallacy as well... I hope not.
We use our brains to interpret the world around us. But there are plenty of things that go on around us that we can not see, hear, smell, touch or taste. There are things outside this world that we have yet to experience.
So science would conclude that it doesn't exist. It can't prove it exists. It can't study it or categorize it... never mind, it can categorize it as myth or fiction. And that is OK. I can't force people to believe. I tried that once and it was horrible. God has to give a person hunger before they will eat. I'm just here for support.
Now back to business. Logic... We use it to interpret our world but it is not the way we can interpret anything outside of it. If there are different dimensions, maybe gravity doesn't work. What if magic is science? What if humans evolved from apes? Anyone? Theory? Yeah, I know... : (
I am not disregarding logic. It is something that God gave us to discern with. But when it comes to spiritual matters, it may not be the best tool to use. We are all used to the scientific method. You make an observation, take notes, formulate theory, test theory, you've got a law... or not!
But when it comes to spiritual matters, we tend to have different experiences at different times. These appear as random and can't be proved by any scientific method. That doesn't mean they didn't happen, it just means it can't be proved.
Another issue in this is the question of whether it is God or not. God interacts with the heart because that is where he is needed. But Satan does to because he knows where your desires lie. Sometimes our experiences can be misinterpreted. It is during these moments we need to pray about it... or see what happens.
God has plans to prosper us. When we act without his blessing, it can really screw things up. Just remember that God never gives you anything that you can't handle and he will also never want you to do anything against his laws that are in the Bible.
In fact that is the best place to look before jumping in on something you though you heard from God. God will make you do some uncomfortable things but they will never be things against Him.
In conclusion (because I doubt anyone can come to one here as it is too long and without enough info), logic makes it hard to hear God. You need to learn to feel with your heart in order to hear Him. That's where he is after all (if you followed step one).