simple nets for sure, but spiders can easily deal with an uncountable number of corner cases, I somehow think it's not reducible to all-too simple rules (in the 'game of life' sense) and more an interaction of several non-trivially complex systems like their various perception systems.
obviously their neural networks are limited in size and therefor complexity has to remain somewhat simple relatively to larger animals).
obviously their neural networks are limited in size and therefor complexity has to remain somewhat simple relatively to larger animals).