[some_random]

I think that's at least partially a view that's obvious because we now consider the heart the "center" of the body. The lungs are obviously expanding as you breath, your stomach obviously digests your food into what becomes you, blows to the head cause mental issues so it's obvious that the brain is used to think.

Meanwhile there's this huge organ in your chest with a non-obvious purpose, I don't think it's that unreasonable for someone to claim it holds your soul or something.

[__MatrixMan__]

Agreed. We put the things we want to believe, but don't have evidence for, in places where we have the least evidence lying around to contradict them. It's why there's a woo woo subculture that uses words like "quantum" in dubious ways.