[nobody271]

I too am outside of my very (very very very) narrow five things that I can do BUT I've had the same question as you so allow me to throw some of my thoughts your way.

It starts off with a rough guess about something hard to define and because it's so hard to define no one ever changes it but it's not as though the rough guess was ever correct. That's the part we forget. I think it's similar to the Turing test which to some people has become like a blindly dogmatic rule for machine intelligence. I don't think the Turing test was ever meant to be used how it's used today. I think it was just a rough guess. More like a "yeah, something like that" kind of thing than a definition.