I commented this elsewhere but please take a look at a few minutes of this video. Just because we do not understand the mechanism does not mean that it doesn’t exist.
A renowned biologist Michael Levin took some basic skin cells from a frog embryo and separated them from the rest of the organism. Astonishingly these “skin” cells rebooted themselves and converted into a new type of organism that is able to solve simple mazes, and demonstrate individual and group behaviors.