...eehhhhhh you probably want to ask that one of somebody smarter.  There's thinking machines that are excellent engineer-minions to great Sparks.  There's artificial races that have given birth to Sparks.  He can't recall off the top of his head thinking of a clank that's a significant-enough Spark to have gone down in history.

...eehhhhhh you probably want to ask that one of somebody smarter.  There's thinking machines that are excellent engineer-minions to great Sparks.  There's artificial races that have given birth to Sparks.  He can't recall off the top of his head a thinking clank that was a significant-enough Spark to have gone down in history.