Machines don't think. They do what they're told, nothing more. "Simple man" as they say.
For a real world example of automated systems gone wrong check out the flash crash of 2010: https://en.m.wikipedia.org/wiki/2010_flash_crash
To be clear I don’t think the risk is “AI gone rogue” it’s either corporations gone rogue or powerful automated systems glitching and causing chaos.
Granted, there's much more at play than _just_ neurons.