ELI5: Explain Like I'm 5

Watchmaker analogy

The watchmaker analogy is a way of looking at how complex things can be created. It's like a watchmaker building a watch: the watchmaker starts off with a pile of parts, but then uses their skills and knowledge to assemble the parts into a functioning watch. The watchmaker could be a person or a machine, but the point is that with their knowledge and skill the watchmaker can build something very complex out of simpler parts. It's a way of looking at how complex things in the world can be created, even out of simpler parts.