Conversations with a sceptic (5): Perception
Q: I admit that my choice of the word 'nothing' might have confused you because even an imaginary idea about something that does not exist in reality, is still in a sense 'something', even if that 'something' is just a pattern of neuronal activity in the human brain.
Such patterns of neuronal activity can have consequences that are real in both good and bad ways. For example, it has been scientifically established that a belief in your medical practitioner will contribute towards the efficacy of any drug prescribed. Even if the drug is just a fake sugary pill, known as a placebo, it will still have some beneficial effect if you have a sufficient belief that it will work.
So, to clear things up, I agree that belief and faith are real 'things', in the sense of 'patterns of neuronal activity' in the human brain which can now be seen with fMRI scans.
However, the question remains whether or not those 'interpretations' in the human brain correspond with reality outside of the human brain. If they don't, disaster can result. The beliefs of ISIS members is an extreme example which is so awful that I don't wish to spoil my post by dwelling on that example. ☹️
Let's consider a more ordinary example, such as a person who has a phobia about snakes. A phobia is considered to be an 'unrealistic' fear of something which is not rationally justified. Imagine someone taking a walk in a park or forest, who has a phobia about snakes. She is a bit worried about the possibility of coming across a snake in such an environment. Suddenly, she see something that resembles a snake, a curved piece of rope lying across the path. Because of her phobia, she is unable to calmly examine the rope to determine whether or not it really is a snake, and immediately jumps to one side, tripping over a boulder and smashing her head on another boulder, and dies. This is a bad consequence of an irrational belief.
From the dawn of civilization to the present day, there have been thousands of hypotheses or ideas about the nature of so many aspects of life, our environment, and the origins of the universe. Finding out what is true, and debunking or falsifying that which cannot be rationally supported, is always a 'work in progress' with much more to learn.
If we rely upon ideas, or have a faith in ideas, which cannot rationally be tested and shown to be at least provisionally true, then disaster can result, and often does result.
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