Nature is extravagance within a framework of minimum effective dose. Too much of anything is poison. Too little is unnatural. A balancing process continues perpetually, always moving toward synchronization. A newly hatched bird can locate a tree 3,000 miles away without fail. Spermatozoa can succeed in fertilizing an egg without taking a course in reproduction. DNA sequencing can detect sophisticated coding that indicates primordial intelligence. Some say this is accidental, whereas I think such reasoning is unfortunate.
The Nature of Intelligence