... I'll tell ya, the most advanced SEO people were doing "AI SEO" by 2009. I knew one guy who made a whole lot of trouble for himself (and me!) by posting a neural network written in PHP to his blog which could decode CAPTCHAs which violated the rule that "you don't talk about Fight Club" and got him attacked by (we think) Russian hackers and wound up attracting the FBI and I become a "person of interest" in the investigation.