For me it is the fact that our blood contains iron. I earlier used to believe the word stood for some ‘organic element’ since I couldn’t accept we had metal flowing through our supposed carbon-based bodies, till I realized that is where the taste and smell of blood comes from.
Gravity likes water even more than it likes boats.
There was this one huge boat, one might even call it’s size Titanic compared to boats, that gravity really loved more than water