Eccentricities define our species. For instance, there is weird science and weird food and when the weird becomes the commonplace, sometimes it no longer remains weird!
Can a brain exist in the cosmos without the body? Can a brain form by itself in the cosmos by fluctuations in the cosmos? Such brains that cosmologists called Boltzmann brains are not absurd concepts but part of serious discussions. So far, we have no way to prove but the idea is there.
Culinary fads come and go. The latest one is famine food – food sourced from barks, weeds, grass, and even ash. Sourcing the food and getting the food on the table after making it palatable makes famine food really expensive.