Heck, people literally used to think eyes are the source of light since everything is dark when you close them.
People are immensely, incredibly, unimaginably stupid. It has taken a lot of miracles put together to get us where we are now…but the fundamentals of what we are haven’t changed.
Stupid is people in 2025 believing the world is flat and germ theory is a hoax. Ignorance becomes stupidity when our species stands on the shoulders of giants but some people simply refuse to open their eyes.
Of course, all these words have some overlap. My larger point is, people rarely come to rational conclusions organically, and it takes decades to centuries for even the most empirically verifiable idea to permeate, especially in the face of misinformation campaigns or when against “common sense”.
So what you are saying is that beings without a central nervous system cannot experience "excitement"?
or perhaps the meaning of too many words has changed, and their context. When Hippocrates claimed that the brain was an organ to cool the blood, perhaps he meant that we use our thought to temper our emotions, i.e. what he said agrees with our modern understanding.
However, many people read Hippocrates and laugh at him, because they think he meant the brain was some kind of radiator.
Maybe because we stopped talking about "excitable" people as being "hot-blooded"
The belief that the heart was the seat of thought and emotion was shared by numerous cultures[0], and was based on their naive interpretation of physiology and biology and cannot be dismissed as a modern misinterpretation of a single vague aphorism by a single person due to the preponderance of documentary evidence to the contrary from contemporary sources. Also, you're probably talking about Aristotle, not Hippocrates.
>Maybe because we stopped talking about "excitable" people as being "hot-blooded"
Also people still say "hot blooded" all the time.