Perhaps the fact that you think this field is only 5 years old means you're probably not enough of an authority to comment confidently on it?
Claiming that AI in anything resembling its current form is older than 5 years is like claiming the history of the combustion engine started when an ape picked up a burning stick.
Claiming that AI in anything resembling its current form is older than 5 years is like claiming the history of the combustion engine started when an ape picked up a burning stick.