The capabilities of animals to know their positions and make corrections seem beyond the abilities of coded instructions or brain size.
Human navigation technology is just catching up to what animals like these can do by instinct.
What do biologists make of the apparently purposive nature of all these different kinds of complex programmed behaviors?
Eric Cassell argues that these innate skills point to algorithms programmed into the ant’s brain and genome.
Charles Darwin conceded that such instincts are “so wonderful” that their origin would strike many as “a difficulty sufficient to overthrow my whole theory.”