according to evolution if we will find a self replicating robot (or a watch) that made from organic components, we need to conclude that such a robot evolved by a natural process. this is because it has a self replicating system and made from organic components, so its basically like any other walking creature. but we know that even such a robot\ watch is evidence for design. therefore nature need design too.
we also find these gears in nature, and we know that gears are the product of design:
https://www.cam.ac.uk/research/news/...the-first-time
we also find these gears in nature, and we know that gears are the product of design:
https://www.cam.ac.uk/research/news/...the-first-time