This is something kinda random but I was studying different technology in lie detection today and came across one called 'transdermal imaging' which tracked blood flow below the skin as a successful and proven detection technique (to some degree.) One commonly voiced tell is how blood drains from under the eyes and fills in the nose during a lie.
What immediately popped in my head was Pinocchio. The connection to changes in the nose and lying was made wayyy before we had any real understanding of this concept. It makes me wonder if we have some understanding about our bodys on a very subconscious level.
Sure it could be a very specific freak coincidence but I feel like there is some connection there thats intriguing the fuck out of me.